55450560 has 224 divisors, whose sum is σ = 197510400. Its totient is φ = 13066240.

The previous prime is 55450559. The next prime is 55450579. The reversal of 55450560 is 6505455.

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, 622996 + ... + 623084.

Almost surely, 2^55450560 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 55450560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98755200).

55450560 is an abundant number, since it is smaller than the sum of its proper divisors (142059840).

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

55450560 is a wasteful number, since it uses less digits than its factorization.

55450560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 55450560 is about 7446.5132780383. The cubic root of 55450560 is about 381.3308827767.

The spelling of 55450560 in words is "fifty-five million, four hundred fifty thousand, five hundred sixty".