55572480 has 240 divisors, whose sum is σ = 202161960. Its totient is φ = 14598144.

The previous prime is 55572479. The next prime is 55572487. The reversal of 55572480 is 8427555.

It is a happy number.

55572480 is a `hidden beast` number, since 5 + 5 + 572 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55572487) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 829407 + ... + 829473.

Almost surely, 2^55572480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55572480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101080980).

55572480 is an abundant number, since it is smaller than the sum of its proper divisors (146589480).

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

55572480 is an equidigital number, since it uses as much as digits as its factorization.

55572480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 55572480 is about 7454.6951647938. The cubic root of 55572480 is about 381.6101575557.

The spelling of 55572480 in words is "fifty-five million, five hundred seventy-two thousand, four hundred eighty".