Search a number
-
+
7445000557 = 731974491153
BaseRepresentation
bin1101110111100000…
…11011000101101101
3201012212002012210101
412323300123011231
5110221410004212
63230432111101
7352331313661
oct67360330555
921185065711
107445000557
113180566125
121539395491
13918572197
14508ab68a1
152d891b157
hex1bbc1b16d

7445000557 has 16 divisors (see below), whose sum is σ = 7608783600. Its totient is φ = 7283146752.

The previous prime is 7445000503. The next prime is 7445000567. The reversal of 7445000557 is 7550005447.

7445000557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2142393796 + 5302606761 = 46286^2 + 72819^2 .

It is a 9-Lehmer number, since φ(7445000557) divides (7445000557-1)9.

It is a cyclic number.

It is not a de Polignac number, because 7445000557 - 27 = 7445000429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7445000567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6456493 + ... + 6457645.

It is an arithmetic number, because the mean of its divisors is an integer number (475548975).

Almost surely, 27445000557 is an apocalyptic number.

It is an amenable number.

7445000557 is a deficient number, since it is larger than the sum of its proper divisors (163783043).

7445000557 is a wasteful number, since it uses less digits than its factorization.

7445000557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872.

The product of its (nonzero) digits is 98000, while the sum is 37.

The square root of 7445000557 is about 86284.4166521395. The cubic root of 7445000557 is about 1952.6372868951.

The spelling of 7445000557 in words is "seven billion, four hundred forty-five million, five hundred fifty-seven", and thus it is an aban number.

Divisors: 1 73 197 449 1153 14381 32777 84169 88453 227141 517697 6457069 16581293 37791881 101986309 7445000557