56409407 has 2 divisors, whose sum is σ = 56409408. Its totient is φ = 56409406.

The previous prime is 56409401. The next prime is 56409433. The reversal of 56409407 is 70490465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56409407 - 2⁴ = 56409391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56409401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28204703 + 28204704.

It is an arithmetic number, because the mean of its divisors is an integer number (28204704).

Almost surely, 2^56409407 is an apocalyptic number.

56409407 is a deficient number, since it is larger than the sum of its proper divisors (1).

56409407 is an equidigital number, since it uses as much as digits as its factorization.

56409407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 56409407 is about 7510.6196149186. The cubic root of 56409407 is about 383.5163158328.

The spelling of 56409407 in words is "fifty-six million, four hundred nine thousand, four hundred seven".