56407223 has 2 divisors, whose sum is σ = 56407224. Its totient is φ = 56407222.

The previous prime is 56407213. The next prime is 56407243. The reversal of 56407223 is 32270465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56407223 - 2⁸ = 56406967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56407213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28203611 + 28203612.

It is an arithmetic number, because the mean of its divisors is an integer number (28203612).

Almost surely, 2^56407223 is an apocalyptic number.

56407223 is a deficient number, since it is larger than the sum of its proper divisors (1).

56407223 is an equidigital number, since it uses as much as digits as its factorization.

56407223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 56407223 is about 7510.4742193819. The cubic root of 56407223 is about 383.5113662420.

Adding to 56407223 its reverse (32270465), we get a palindrome (88677688).

The spelling of 56407223 in words is "fifty-six million, four hundred seven thousand, two hundred twenty-three".