1057239057 has 16 divisors (see below), whose sum is σ = 1613139840. Its totient is φ = 603345792.

The previous prime is 1057239031. The next prime is 1057239077. The reversal of 1057239057 is 7509327501.

It is not a de Polignac number, because 1057239057 - 2¹² = 1057234961 is a prime.

It is a super-2 number, since 2×1057239057² = 2235508847292498498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057239017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16332 + ... + 48797.

It is an arithmetic number, because the mean of its divisors is an integer number (100821240).

Almost surely, 2^1057239057 is an apocalyptic number.

It is an amenable number.

1057239057 is a deficient number, since it is larger than the sum of its proper divisors (555900783).

1057239057 is an equidigital number, since it uses as much as digits as its factorization.

1057239057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65912.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 1057239057 is about 32515.2127011342. The cubic root of 1057239057 is about 1018.7268033811.

The spelling of 1057239057 in words is "one billion, fifty-seven million, two hundred thirty-nine thousand, fifty-seven".