56400787 has 2 divisors, whose sum is σ = 56400788. Its totient is φ = 56400786.

The previous prime is 56400733. The next prime is 56400793. The reversal of 56400787 is 78700465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56400787 - 2²³ = 48012179 is a prime.

It is not a weakly prime, because it can be changed into another prime (56400187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28200393 + 28200394.

It is an arithmetic number, because the mean of its divisors is an integer number (28200394).

Almost surely, 2^56400787 is an apocalyptic number.

56400787 is a deficient number, since it is larger than the sum of its proper divisors (1).

56400787 is an equidigital number, since it uses as much as digits as its factorization.

56400787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 56400787 is about 7510.0457388754. The cubic root of 56400787 is about 383.4967796170.

The spelling of 56400787 in words is "fifty-six million, four hundred thousand, seven hundred eighty-seven".