55912500 has 216 divisors, whose sum is σ = 204736896. Its totient is φ = 12600000.

The previous prime is 55912481. The next prime is 55912501. The reversal of 55912500 is 521955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55912501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 787465 + ... + 787535.

It is an arithmetic number, because the mean of its divisors is an integer number (947856).

Almost surely, 2^55912500 is an apocalyptic number.

55912500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55912500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102368448).

55912500 is an abundant number, since it is smaller than the sum of its proper divisors (148824396).

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

55912500 is a wasteful number, since it uses less digits than its factorization.

55912500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 55912500 is about 7477.4661483687. The cubic root of 55912500 is about 382.3868690163.

The spelling of 55912500 in words is "fifty-five million, nine hundred twelve thousand, five hundred".