157270523 has 4 divisors (see below), whose sum is σ = 157776528. Its totient is φ = 156764520.

The previous prime is 157270517. The next prime is 157270537. The reversal of 157270523 is 325072751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 157270523 - 2¹⁶ = 157204987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157270523.

It is not an unprimeable number, because it can be changed into a prime (157270513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252536 + ... + 253157.

It is an arithmetic number, because the mean of its divisors is an integer number (39444132).

Almost surely, 2^157270523 is an apocalyptic number.

157270523 is a deficient number, since it is larger than the sum of its proper divisors (506005).

157270523 is an equidigital number, since it uses as much as digits as its factorization.

157270523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506004.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 157270523 is about 12540.7544828850. The cubic root of 157270523 is about 539.7787422311.

The spelling of 157270523 in words is "one hundred fifty-seven million, two hundred seventy thousand, five hundred twenty-three".