2557217523 has 16 divisors (see below), whose sum is σ = 3899390976. Its totient is φ = 1460262720.

The previous prime is 2557217491. The next prime is 2557217549. The reversal of 2557217523 is 3257127552.

It is not a de Polignac number, because 2557217523 - 2⁵ = 2557217491 is a prime.

It is a super-2 number, since 2×2557217523² = 13078722919876511058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2557217563) 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, 10011 + ... + 72212.

It is an arithmetic number, because the mean of its divisors is an integer number (243711936).

Almost surely, 2^2557217523 is an apocalyptic number.

2557217523 is a deficient number, since it is larger than the sum of its proper divisors (1342173453).

2557217523 is a wasteful number, since it uses less digits than its factorization.

2557217523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83714.

The product of its digits is 147000, while the sum is 39.

The square root of 2557217523 is about 50568.9383218592. The cubic root of 2557217523 is about 1367.4849559243.

The spelling of 2557217523 in words is "two billion, five hundred fifty-seven million, two hundred seventeen thousand, five hundred twenty-three".