56400497 has 2 divisors, whose sum is σ = 56400498. Its totient is φ = 56400496.

The previous prime is 56400481. The next prime is 56400503. The reversal of 56400497 is 79400465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48385936 + 8014561 = 6956^2 + 2831^2 .

It is a cyclic number.

It is not a de Polignac number, because 56400497 - 2⁴ = 56400481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56400437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28200248 + 28200249.

It is an arithmetic number, because the mean of its divisors is an integer number (28200249).

Almost surely, 2^56400497 is an apocalyptic number.

It is an amenable number.

56400497 is a deficient number, since it is larger than the sum of its proper divisors (1).

56400497 is an equidigital number, since it uses as much as digits as its factorization.

56400497 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 56400497 is about 7510.0264313783. The cubic root of 56400497 is about 383.4961223315.

The spelling of 56400497 in words is "fifty-six million, four hundred thousand, four hundred ninety-seven".