2551572747 has 12 divisors (see below), whose sum is σ = 3705969904. Its totient is φ = 1691649360.

The previous prime is 2551572733. The next prime is 2551572763. The reversal of 2551572747 is 7472751552.

2551572747 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 572 + 74 + 7 = 666.

It is not a de Polignac number, because 2551572747 - 2²⁸ = 2283137291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551572767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 781543 + ... + 784800.

Almost surely, 2^2551572747 is an apocalyptic number.

2551572747 is a deficient number, since it is larger than the sum of its proper divisors (1154397157).

2551572747 is a wasteful number, since it uses less digits than its factorization.

2551572747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566530 (or 1566527 counting only the distinct ones).

The product of its digits is 686000, while the sum is 45.

The square root of 2551572747 is about 50513.0948071884. The cubic root of 2551572747 is about 1366.4780238601.

The spelling of 2551572747 in words is "two billion, five hundred fifty-one million, five hundred seventy-two thousand, seven hundred forty-seven".