56000251 has 2 divisors, whose sum is σ = 56000252. Its totient is φ = 56000250.

The previous prime is 56000249. The next prime is 56000267. The reversal of 56000251 is 15200065.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56000251 - 2¹ = 56000249 is a prime.

It is a super-2 number, since 2×56000251² = 6272056224126002, which contains 22 as substring.

Together with 56000249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56000221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28000125 + 28000126.

It is an arithmetic number, because the mean of its divisors is an integer number (28000126).

Almost surely, 2^56000251 is an apocalyptic number.

56000251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56000251 is an equidigital number, since it uses as much as digits as its factorization.

56000251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 56000251 is about 7483.3315441720. The cubic root of 56000251 is about 382.5868081557.

The spelling of 56000251 in words is "fifty-six million, two hundred fifty-one", and thus it is an aban number.