56255550 has 96 divisors (see below), whose sum is σ = 159177312. Its totient is φ = 13025280.

The previous prime is 56255527. The next prime is 56255557. The reversal of 56255550 is 5555265.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56255557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32302 + ... + 33998.

It is an arithmetic number, because the mean of its divisors is an integer number (1658097).

Almost surely, 2^56255550 is an apocalyptic number.

56255550 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 56255550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79588656).

56255550 is an abundant number, since it is smaller than the sum of its proper divisors (102921762).

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

56255550 is a wasteful number, since it uses less digits than its factorization.

56255550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 56255550 is about 7500.3699908738. The cubic root of 56255550 is about 383.1673173152.

It can be divided in two parts, 5625 and 5550, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 56255550 in words is "fifty-six million, two hundred fifty-five thousand, five hundred fifty".