1057156506 has 48 divisors (see below), whose sum is σ = 2622182784. Its totient is φ = 301529952.

The previous prime is 1057156493. The next prime is 1057156547. The reversal of 1057156506 is 6056517501.

It is a super-2 number, since 2×1057156506² = 2235159756356256072, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70395 + ... + 84081.

It is an arithmetic number, because the mean of its divisors is an integer number (54628808).

Almost surely, 2^1057156506 is an apocalyptic number.

1057156506 is an abundant number, since it is smaller than the sum of its proper divisors (1565026278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1057156506 is a wasteful number, since it uses less digits than its factorization.

1057156506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315 (or 14312 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 1057156506 is about 32513.9432551636. The cubic root of 1057156506 is about 1018.7002880581.

The spelling of 1057156506 in words is "one billion, fifty-seven million, one hundred fifty-six thousand, five hundred six".