55921104 has 120 divisors (see below), whose sum is σ = 171065440. Its totient is φ = 17635968.

The previous prime is 55921093. The next prime is 55921133. The reversal of 55921104 is 40112955.

55921104 is a `hidden beast` number, since 559 + 2 + 1 + 104 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73494 + ... + 74250.

Almost surely, 2^55921104 is an apocalyptic number.

55921104 is a gapful number since it is divisible by the number (54) 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 55921104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85532720).

55921104 is an abundant number, since it is smaller than the sum of its proper divisors (115144336).

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

55921104 is a wasteful number, since it uses less digits than its factorization.

55921104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 55921104 is about 7478.0414548196. The cubic root of 55921104 is about 382.4064823280.

The spelling of 55921104 in words is "fifty-five million, nine hundred twenty-one thousand, one hundred four".