56778903 has 12 divisors (see below), whose sum is σ = 82090008. Its totient is φ = 37817520.

The previous prime is 56778901. The next prime is 56778919. The reversal of 56778903 is 30987765.

It is a happy number.

56778903 is a `hidden beast` number, since 567 + 7 + 89 + 0 + 3 = 666.

It is not a de Polignac number, because 56778903 - 2¹ = 56778901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56778901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10633 + ... + 15053.

It is an arithmetic number, because the mean of its divisors is an integer number (6840834).

Almost surely, 2^56778903 is an apocalyptic number.

56778903 is a deficient number, since it is larger than the sum of its proper divisors (25311105).

56778903 is a wasteful number, since it uses less digits than its factorization.

56778903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854 (or 5851 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 56778903 is about 7535.1777019524. The cubic root of 56778903 is about 384.3518706685.

The spelling of 56778903 in words is "fifty-six million, seven hundred seventy-eight thousand, nine hundred three".