55507560 has 64 divisors (see below), whose sum is σ = 169274880. Its totient is φ = 14557440.

The previous prime is 55507553. The next prime is 55507561. The reversal of 55507560 is 6570555.

It is not an unprimeable number, because it can be changed into a prime (55507561) 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, 3529 + ... + 11111.

It is an arithmetic number, because the mean of its divisors is an integer number (2644920).

Almost surely, 2^55507560 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 55507560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84637440).

55507560 is an abundant number, since it is smaller than the sum of its proper divisors (113767320).

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

55507560 is a wasteful number, since it uses less digits than its factorization.

55507560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658 (or 7654 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 55507560 is about 7450.3395895758. The cubic root of 55507560 is about 381.4615001340.

The spelling of 55507560 in words is "fifty-five million, five hundred seven thousand, five hundred sixty".