1056172012 has 48 divisors (see below), whose sum is σ = 2145814272. Its totient is φ = 445515840.

The previous prime is 1056171973. The next prime is 1056172031. The reversal of 1056172012 is 2102716501.

It is a super-2 number, since 2×1056172012² = 2230998637864256288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768558 + ... + 769930.

It is an arithmetic number, because the mean of its divisors is an integer number (44704464).

Almost surely, 2^1056172012 is an apocalyptic number.

It is an amenable number.

1056172012 is an abundant number, since it is smaller than the sum of its proper divisors (1089642260).

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

1056172012 is a wasteful number, since it uses less digits than its factorization.

1056172012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1056172012 is about 32498.8001624675. The cubic root of 1056172012 is about 1018.3839628340.

Adding to 1056172012 its reverse (2102716501), we get a palindrome (3158888513).

The spelling of 1056172012 in words is "one billion, fifty-six million, one hundred seventy-two thousand, twelve".