2531391552 has 84 divisors (see below), whose sum is σ = 7489886976. Its totient is φ = 816572160.

The previous prime is 2531391539. The next prime is 2531391589. The reversal of 2531391552 is 2551931352.

2531391552 is a `hidden beast` number, since 2 + 5 + 3 + 13 + 91 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53028 + ... + 88739.

Almost surely, 2^2531391552 is an apocalyptic number.

It is an amenable number.

2531391552 is an abundant number, since it is smaller than the sum of its proper divisors (4958495424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2531391552 is a wasteful number, since it uses less digits than its factorization.

2531391552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141816 (or 141803 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 2531391552 is about 50312.9362291648. The cubic root of 2531391552 is about 1362.8658483041.

The spelling of 2531391552 in words is "two billion, five hundred thirty-one million, three hundred ninety-one thousand, five hundred fifty-two".