55899072 has 140 divisors (see below), whose sum is σ = 170389296. Its totient is φ = 18109440.

The previous prime is 55899071. The next prime is 55899091. The reversal of 55899072 is 27099855.

It is a happy number.

55899072 is a `hidden beast` number, since 558 + 9 + 90 + 7 + 2 = 666.

55899072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55899072² = 6249412500922368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55899071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 212413 + ... + 212675.

Almost surely, 2^55899072 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 55899072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85194648).

55899072 is an abundant number, since it is smaller than the sum of its proper divisors (114490224).

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

55899072 is a wasteful number, since it uses less digits than its factorization.

55899072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 55899072 is about 7476.5681967063. The cubic root of 55899072 is about 382.3562550988.

The spelling of 55899072 in words is "fifty-five million, eight hundred ninety-nine thousand, seventy-two".