2557447473 has 16 divisors (see below), whose sum is σ = 3923222400. Its totient is φ = 1451588736.

The previous prime is 2557447469. The next prime is 2557447483. The reversal of 2557447473 is 3747447552.

2557447473 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2557447473 - 2² = 2557447469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2557447483) 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, 405540 + ... + 411797.

It is an arithmetic number, because the mean of its divisors is an integer number (245201400).

Almost surely, 2^2557447473 is an apocalyptic number.

It is an amenable number.

2557447473 is a deficient number, since it is larger than the sum of its proper divisors (1365774927).

2557447473 is a wasteful number, since it uses less digits than its factorization.

2557447473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817496.

The product of its digits is 3292800, while the sum is 48.

The square root of 2557447473 is about 50571.2118996569. The cubic root of 2557447473 is about 1367.5259436695.

The spelling of 2557447473 in words is "two billion, five hundred fifty-seven million, four hundred forty-seven thousand, four hundred seventy-three".