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157151165 = 531799149
BaseRepresentation
bin10010101110111…
…10111110111101
3101221201002212112
421113132332331
5310212314130
623332143405
73615522443
oct1127367675
9357632775
10157151165
1180786aa6
1244767b65
1326733b72
1416c2ab93
15dbe3495
hex95defbd

157151165 has 8 divisors (see below), whose sum is σ = 189178200. Its totient is φ = 125323072.

The previous prime is 157151153. The next prime is 157151167. The reversal of 157151165 is 561151751.

It can be written as a sum of positive squares in 4 ways, for example, as 7284601 + 149866564 = 2699^2 + 12242^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157151165 - 216 = 157085629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157151167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47990 + ... + 51159.

It is an arithmetic number, because the mean of its divisors is an integer number (23647275).

Almost surely, 2157151165 is an apocalyptic number.

It is an amenable number.

157151165 is a deficient number, since it is larger than the sum of its proper divisors (32027035).

157151165 is an equidigital number, since it uses as much as digits as its factorization.

157151165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99471.

The product of its digits is 5250, while the sum is 32.

The square root of 157151165 is about 12535.9947750468. The cubic root of 157151165 is about 539.6421554646.

The spelling of 157151165 in words is "one hundred fifty-seven million, one hundred fifty-one thousand, one hundred sixty-five".

Divisors: 1 5 317 1585 99149 495745 31430233 157151165