1057212915 has 128 divisors (see below), whose sum is σ = 2090188800. Its totient is φ = 449648640.

The previous prime is 1057212887. The next prime is 1057212931. The reversal of 1057212915 is 5192127501.

It is not a de Polignac number, because 1057212915 - 2⁵ = 1057212883 is a prime.

It is a super-2 number, since 2×1057212915² = 2235398295285594450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4423366 + ... + 4423604.

It is an arithmetic number, because the mean of its divisors is an integer number (16329600).

Almost surely, 2^1057212915 is an apocalyptic number.

1057212915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1057212915 is a deficient number, since it is larger than the sum of its proper divisors (1032975885).

1057212915 is a wasteful number, since it uses less digits than its factorization.

1057212915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 1057212915 is about 32514.8107022015. The cubic root of 1057212915 is about 1018.7184067385.

The spelling of 1057212915 in words is "one billion, fifty-seven million, two hundred twelve thousand, nine hundred fifteen".