56642250 has 64 divisors (see below), whose sum is σ = 161591040. Its totient is φ = 12945600.

The previous prime is 56642237. The next prime is 56642263. The reversal of 56642250 is 5224665.

It is an interprime number because it is at equal distance from previous prime (56642237) and next prime (56642263).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145 + ... + 10644.

It is an arithmetic number, because the mean of its divisors is an integer number (2524860).

Almost surely, 2^56642250 is an apocalyptic number.

56642250 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 56642250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80795520).

56642250 is an abundant number, since it is smaller than the sum of its proper divisors (104948790).

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

56642250 is a wasteful number, since it uses less digits than its factorization.

56642250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10816 (or 10806 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 56642250 is about 7526.1045700947. The cubic root of 56642250 is about 384.0432758302.

The spelling of 56642250 in words is "fifty-six million, six hundred forty-two thousand, two hundred fifty".