56423387 has 2 divisors, whose sum is σ = 56423388. Its totient is φ = 56423386.

The previous prime is 56423383. The next prime is 56423399. The reversal of 56423387 is 78332465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56423387 - 2² = 56423383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56423387.

It is not a weakly prime, because it can be changed into another prime (56423383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28211693 + 28211694.

It is an arithmetic number, because the mean of its divisors is an integer number (28211694).

Almost surely, 2^56423387 is an apocalyptic number.

56423387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56423387 is an equidigital number, since it uses as much as digits as its factorization.

56423387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 56423387 is about 7511.5502394646. The cubic root of 56423387 is about 383.5479956271.

The spelling of 56423387 in words is "fifty-six million, four hundred twenty-three thousand, three hundred eighty-seven".