157472765 has 4 divisors (see below), whose sum is σ = 188967324. Its totient is φ = 125978208.

The previous prime is 157472747. The next prime is 157472801. The reversal of 157472765 is 567274751.

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

It can be written as a sum of positive squares in 2 ways, for example, as 125910841 + 31561924 = 11221^2 + 5618^2 .

It is a cyclic number.

It is not a de Polignac number, because 157472765 - 2⁸ = 157472509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15747272 + ... + 15747281.

It is an arithmetic number, because the mean of its divisors is an integer number (47241831).

Almost surely, 2^157472765 is an apocalyptic number.

It is an amenable number.

157472765 is a deficient number, since it is larger than the sum of its proper divisors (31494559).

157472765 is an equidigital number, since it uses as much as digits as its factorization.

157472765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31494558.

The product of its digits is 411600, while the sum is 44.

The square root of 157472765 is about 12548.8152827269. The cubic root of 157472765 is about 540.0100192471.

The spelling of 157472765 in words is "one hundred fifty-seven million, four hundred seventy-two thousand, seven hundred sixty-five".