56551351 has 2 divisors, whose sum is σ = 56551352. Its totient is φ = 56551350.

The previous prime is 56551343. The next prime is 56551357. The reversal of 56551351 is 15315565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56551351 - 2³ = 56551343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56551357) 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, 28275675 + 28275676.

It is an arithmetic number, because the mean of its divisors is an integer number (28275676).

Almost surely, 2^56551351 is an apocalyptic number.

56551351 is a deficient number, since it is larger than the sum of its proper divisors (1).

56551351 is an equidigital number, since it uses as much as digits as its factorization.

56551351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11250, while the sum is 31.

The square root of 56551351 is about 7520.0632311171. The cubic root of 56551351 is about 383.8377293794.

The spelling of 56551351 in words is "fifty-six million, five hundred fifty-one thousand, three hundred fifty-one".