1057508557 has 4 divisors (see below), whose sum is σ = 1208581216. Its totient is φ = 906435900.

The previous prime is 1057508533. The next prime is 1057508563. The reversal of 1057508557 is 7558057501.

It is a happy number.

1057508557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1057508557 - 2¹⁵ = 1057475789 is a prime.

It is a super-2 number, since 2×1057508557² = 2236648696256444498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057508957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75536319 + ... + 75536332.

It is an arithmetic number, because the mean of its divisors is an integer number (302145304).

Almost surely, 2^1057508557 is an apocalyptic number.

It is an amenable number.

1057508557 is a deficient number, since it is larger than the sum of its proper divisors (151072659).

1057508557 is an equidigital number, since it uses as much as digits as its factorization.

1057508557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151072658.

The product of its (nonzero) digits is 245000, while the sum is 43.

The square root of 1057508557 is about 32519.3566510778. The cubic root of 1057508557 is about 1018.8133569841.

The spelling of 1057508557 in words is "one billion, fifty-seven million, five hundred eight thousand, five hundred fifty-seven".