2557497057 has 16 divisors (see below), whose sum is σ = 3567497472. Its totient is φ = 1628017280.

The previous prime is 2557496947. The next prime is 2557497077. The reversal of 2557497057 is 7507947552.

It is a cyclic number.

It is not a de Polignac number, because 2557497057 - 2¹² = 2557492961 is a prime.

It is a super-2 number, since 2×2557497057² = 13081582393127322498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2557497077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215418 + ... + 226979.

It is an arithmetic number, because the mean of its divisors is an integer number (222968592).

Almost surely, 2^2557497057 is an apocalyptic number.

It is an amenable number.

2557497057 is a deficient number, since it is larger than the sum of its proper divisors (1010000415).

2557497057 is a wasteful number, since it uses less digits than its factorization.

2557497057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442488.

The product of its (nonzero) digits is 3087000, while the sum is 51.

The square root of 2557497057 is about 50571.7021366693. The cubic root of 2557497057 is about 1367.5347815138.

The spelling of 2557497057 in words is "two billion, five hundred fifty-seven million, four hundred ninety-seven thousand, fifty-seven".