156745057 has 4 divisors (see below), whose sum is σ = 179137216. Its totient is φ = 134352900.

The previous prime is 156745033. The next prime is 156745081. The reversal of 156745057 is 750547651.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (156745033) and next prime (156745081).

It is a cyclic number.

It is not a de Polignac number, because 156745057 - 2¹⁵ = 156712289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156748057) 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, 11196069 + ... + 11196082.

It is an arithmetic number, because the mean of its divisors is an integer number (44784304).

Almost surely, 2^156745057 is an apocalyptic number.

It is an amenable number.

156745057 is a deficient number, since it is larger than the sum of its proper divisors (22392159).

156745057 is an equidigital number, since it uses as much as digits as its factorization.

156745057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22392158.

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 156745057 is about 12519.7866195874. The cubic root of 156745057 is about 539.1769090559.

The spelling of 156745057 in words is "one hundred fifty-six million, seven hundred forty-five thousand, fifty-seven".