55520976 has 80 divisors (see below), whose sum is σ = 165168000. Its totient is φ = 15742464.

The previous prime is 55520939. The next prime is 55520977. The reversal of 55520976 is 67902555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49510 + ... + 50618.

It is an arithmetic number, because the mean of its divisors is an integer number (2064600).

Almost surely, 2^55520976 is an apocalyptic number.

55520976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55520976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82584000).

55520976 is an abundant number, since it is smaller than the sum of its proper divisors (109647024).

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

55520976 is a wasteful number, since it uses less digits than its factorization.

55520976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 55520976 is about 7451.2398968225. The cubic root of 55520976 is about 381.4922303338.

The spelling of 55520976 in words is "fifty-five million, five hundred twenty thousand, nine hundred seventy-six".