56756550 has 48 divisors (see below), whose sum is σ = 141276672. Its totient is φ = 15079200.

The previous prime is 56756537. The next prime is 56756561. The reversal of 56756550 is 5565765.

It is a junction number, because it is equal to n+sod(n) for n = 56756499 and 56756508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54535 + ... + 55565.

It is an arithmetic number, because the mean of its divisors is an integer number (2943264).

Almost surely, 2^56756550 is an apocalyptic number.

56756550 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 56756550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70638336).

56756550 is an abundant number, since it is smaller than the sum of its proper divisors (84520122).

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

56756550 is a wasteful number, since it uses less digits than its factorization.

56756550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 39.

The square root of 56756550 is about 7533.6943128853. The cubic root of 56756550 is about 384.3014261983.

The spelling of 56756550 in words is "fifty-six million, seven hundred fifty-six thousand, five hundred fifty".