56400775 has 6 divisors (see below), whose sum is σ = 69936992. Its totient is φ = 45120600.

The previous prime is 56400733. The next prime is 56400787. The reversal of 56400775 is 57700465.

It is not a de Polignac number, because 56400775 - 2¹⁵ = 56368007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56400775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127991 + ... + 1128040.

Almost surely, 2^56400775 is an apocalyptic number.

56400775 is a deficient number, since it is larger than the sum of its proper divisors (13536217).

56400775 is a wasteful number, since it uses less digits than its factorization.

56400775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256041 (or 2256036 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 56400775 is about 7510.0449399454. The cubic root of 56400775 is about 383.4967524190.

It can be divided in two parts, 56400 and 775, that added together give a palindrome (57175).

The spelling of 56400775 in words is "fifty-six million, four hundred thousand, seven hundred seventy-five".