56319451 has 2 divisors, whose sum is σ = 56319452. Its totient is φ = 56319450.

The previous prime is 56319449. The next prime is 56319493. The reversal of 56319451 is 15491365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56319451 - 2¹ = 56319449 is a prime.

Together with 56319449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56319251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28159725 + 28159726.

It is an arithmetic number, because the mean of its divisors is an integer number (28159726).

Almost surely, 2^56319451 is an apocalyptic number.

56319451 is a deficient number, since it is larger than the sum of its proper divisors (1).

56319451 is an equidigital number, since it uses as much as digits as its factorization.

56319451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 34.

The square root of 56319451 is about 7504.6286383804. The cubic root of 56319451 is about 383.3123430641.

The spelling of 56319451 in words is "fifty-six million, three hundred nineteen thousand, four hundred fifty-one".