56402787 has 16 divisors (see below), whose sum is σ = 91003392. Its totient is φ = 30334080.

The previous prime is 56402779. The next prime is 56402789. The reversal of 56402787 is 78720465.

It is not a de Polignac number, because 56402787 - 2³ = 56402779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56402789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78639 + ... + 79352.

It is an arithmetic number, because the mean of its divisors is an integer number (5687712).

Almost surely, 2^56402787 is an apocalyptic number.

56402787 is a deficient number, since it is larger than the sum of its proper divisors (34600605).

56402787 is a wasteful number, since it uses less digits than its factorization.

56402787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158018.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 56402787 is about 7510.1788926763. The cubic root of 56402787 is about 383.5013125590.

The spelling of 56402787 in words is "fifty-six million, four hundred two thousand, seven hundred eighty-seven".