156540452 has 24 divisors (see below), whose sum is σ = 287589120. Its totient is φ = 74458080.

The previous prime is 156540431. The next prime is 156540467. The reversal of 156540452 is 254045651.

It is a super-2 number, since 2×156540452² = 49009826224728608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3383 + ... + 18014.

It is an arithmetic number, because the mean of its divisors is an integer number (11982880).

Almost surely, 2^156540452 is an apocalyptic number.

It is an amenable number.

156540452 is a deficient number, since it is larger than the sum of its proper divisors (131048668).

156540452 is a wasteful number, since it uses less digits than its factorization.

156540452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21491 (or 21489 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 156540452 is about 12511.6126858211. The cubic root of 156540452 is about 538.9422045210.

The spelling of 156540452 in words is "one hundred fifty-six million, five hundred forty thousand, four hundred fifty-two".