56503878 has 16 divisors (see below), whose sum is σ = 113396976. Its totient is φ = 18769760.

The previous prime is 56503877. The next prime is 56503897. The reversal of 56503878 is 87830565.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56503871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14313 + ... + 17828.

It is an arithmetic number, because the mean of its divisors is an integer number (7087311).

Almost surely, 2^56503878 is an apocalyptic number.

56503878 is an abundant number, since it is smaller than the sum of its proper divisors (56893098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56503878 is a wasteful number, since it uses less digits than its factorization.

56503878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32439.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 56503878 is about 7516.9061454830. The cubic root of 56503878 is about 383.7302929257.

The spelling of 56503878 in words is "fifty-six million, five hundred three thousand, eight hundred seventy-eight".