Search a number
-
+
157052789 = 315066219
BaseRepresentation
bin10010101110001…
…10111101110101
3101221112002220222
421113012331311
5310201142124
623330104125
73614632565
oct1127067565
9357462828
10157052789
118071a0a3
124471b045
13266cb15a
1416c02da5
15dbc425e
hex95c6f75

157052789 has 4 divisors (see below), whose sum is σ = 162119040. Its totient is φ = 151986540.

The previous prime is 157052771. The next prime is 157052801. The reversal of 157052789 is 987250751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157052789 - 220 = 156004213 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 (157072789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533079 + ... + 2533140.

It is an arithmetic number, because the mean of its divisors is an integer number (40529760).

Almost surely, 2157052789 is an apocalyptic number.

It is an amenable number.

157052789 is a deficient number, since it is larger than the sum of its proper divisors (5066251).

157052789 is an equidigital number, since it uses as much as digits as its factorization.

157052789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066250.

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 157052789 is about 12532.0704195277. The cubic root of 157052789 is about 539.5295273503.

The spelling of 157052789 in words is "one hundred fifty-seven million, fifty-two thousand, seven hundred eighty-nine".

Divisors: 1 31 5066219 157052789