56117550 has 24 divisors (see below), whose sum is σ = 139171896. Its totient is φ = 14964640.

The previous prime is 56117549. The next prime is 56117563. The reversal of 56117550 is 5571165.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186909 + ... + 187208.

It is an arithmetic number, because the mean of its divisors is an integer number (5798829).

Almost surely, 2^56117550 is an apocalyptic number.

56117550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56117550 is an abundant number, since it is smaller than the sum of its proper divisors (83054346).

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

56117550 is a wasteful number, since it uses less digits than its factorization.

56117550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374132 (or 374127 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 56117550 is about 7491.1647959446. The cubic root of 56117550 is about 382.8537459654.

The spelling of 56117550 in words is "fifty-six million, one hundred seventeen thousand, five hundred fifty".