56651251 has 2 divisors, whose sum is σ = 56651252. Its totient is φ = 56651250.

The previous prime is 56651233. The next prime is 56651261. The reversal of 56651251 is 15215665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56651251 - 2⁵ = 56651219 is a prime.

It is equal to p_3374824 and since 56651251 and 3374824 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56651261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28325625 + 28325626.

It is an arithmetic number, because the mean of its divisors is an integer number (28325626).

Almost surely, 2^56651251 is an apocalyptic number.

56651251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56651251 is an equidigital number, since it uses as much as digits as its factorization.

56651251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 31.

The square root of 56651251 is about 7526.7025316536. The cubic root of 56651251 is about 384.0636174800.

The spelling of 56651251 in words is "fifty-six million, six hundred fifty-one thousand, two hundred fifty-one".