Search a number
-
+
153044245 = 530608849
BaseRepresentation
bin10010001111101…
…00010100010101
3101122222110020101
421013310110111
5303134403440
623104134101
73535566064
oct1107642425
9348873211
10153044245
1179431452
1243307331
1325926733
141647c1db
15d68169a
hex91f4515

153044245 has 4 divisors (see below), whose sum is σ = 183653100. Its totient is φ = 122435392.

The previous prime is 153044239. The next prime is 153044249. The reversal of 153044245 is 542440351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542440351 = 772370237.

It can be written as a sum of positive squares in 2 ways, for example, as 69906321 + 83137924 = 8361^2 + 9118^2 .

It is a cyclic number.

It is not a de Polignac number, because 153044245 - 225 = 119489813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153044249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15304420 + ... + 15304429.

It is an arithmetic number, because the mean of its divisors is an integer number (45913275).

Almost surely, 2153044245 is an apocalyptic number.

It is an amenable number.

153044245 is a deficient number, since it is larger than the sum of its proper divisors (30608855).

153044245 is an equidigital number, since it uses as much as digits as its factorization.

153044245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30608854.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 153044245 is about 12371.1052456925. The cubic root of 153044245 is about 534.8996754845.

Adding to 153044245 its reverse (542440351), we get a palindrome (695484596).

The spelling of 153044245 in words is "one hundred fifty-three million, forty-four thousand, two hundred forty-five".

Divisors: 1 5 30608849 153044245