6451562251 has 2 divisors, whose sum is σ = 6451562252. Its totient is φ = 6451562250.

The previous prime is 6451562231. The next prime is 6451562291. The reversal of 6451562251 is 1522651546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6451562251 - 2⁵ = 6451562219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6451562251.

It is not a weakly prime, because it can be changed into another prime (6451562231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225781125 + 3225781126.

It is an arithmetic number, because the mean of its divisors is an integer number (3225781126).

Almost surely, 2^6451562251 is an apocalyptic number.

6451562251 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451562251 is an equidigital number, since it uses as much as digits as its factorization.

6451562251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 6451562251 is about 80321.6175820682. The cubic root of 6451562251 is about 1861.6082605079.

The spelling of 6451562251 in words is "six billion, four hundred fifty-one million, five hundred sixty-two thousand, two hundred fifty-one".