6537562251 has 32 divisors (see below), whose sum is σ = 9930498048. Its totient is φ = 3786884640.

The previous prime is 6537562247. The next prime is 6537562259. The reversal of 6537562251 is 1522657356.

It is not a de Polignac number, because 6537562251 - 2² = 6537562247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6537562259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1262670 + ... + 1267836.

It is an arithmetic number, because the mean of its divisors is an integer number (310328064).

Almost surely, 2^6537562251 is an apocalyptic number.

6537562251 is a deficient number, since it is larger than the sum of its proper divisors (3392935797).

6537562251 is a wasteful number, since it uses less digits than its factorization.

6537562251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871.

The product of its digits is 378000, while the sum is 42.

The square root of 6537562251 is about 80855.1930985265. The cubic root of 6537562251 is about 1869.8435865819.

The spelling of 6537562251 in words is "six billion, five hundred thirty-seven million, five hundred sixty-two thousand, two hundred fifty-one".