55210580 has 48 divisors (see below), whose sum is σ = 127370880. Its totient is φ = 20009088.

The previous prime is 55210553. The next prime is 55210591. The reversal of 55210580 is 8501255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5582 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2^55210580 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 55210580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63685440).

55210580 is an abundant number, since it is smaller than the sum of its proper divisors (72160300).

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

55210580 is a wasteful number, since it uses less digits than its factorization.

55210580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368 (or 6366 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 55210580 is about 7430.3822243543. The cubic root of 55210580 is about 380.7799768942.

The spelling of 55210580 in words is "fifty-five million, two hundred ten thousand, five hundred eighty".