55524720 has 160 divisors (see below), whose sum is σ = 188559360. Its totient is φ = 13455360.

The previous prime is 55524683. The next prime is 55524731. The reversal of 55524720 is 2742555.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126261 + ... + 126699.

It is an arithmetic number, because the mean of its divisors is an integer number (1178496).

Almost surely, 2^55524720 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 55524720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94279680).

55524720 is an abundant number, since it is smaller than the sum of its proper divisors (133034640).

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

55524720 is a wasteful number, since it uses less digits than its factorization.

55524720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 55524720 is about 7451.4911259425. The cubic root of 55524720 is about 381.5008053200.

The spelling of 55524720 in words is "fifty-five million, five hundred twenty-four thousand, seven hundred twenty".