56306550 has 96 divisors (see below), whose sum is σ = 150418944. Its totient is φ = 13888000.

The previous prime is 56306531. The next prime is 56306561. The reversal of 56306550 is 5560365.

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 47 ways as a sum of consecutive naturals, for example, 180895 + ... + 181205.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^56306550 is an apocalyptic number.

56306550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56306550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75209472).

56306550 is an abundant number, since it is smaller than the sum of its proper divisors (94112394).

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

56306550 is a wasteful number, since it uses less digits than its factorization.

56306550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 56306550 is about 7503.7690529493. The cubic root of 56306550 is about 383.2830725954.

The spelling of 56306550 in words is "fifty-six million, three hundred six thousand, five hundred fifty".