55289120 has 96 divisors (see below), whose sum is σ = 137604096. Its totient is φ = 20966400.

The previous prime is 55289081. The next prime is 55289131. The reversal of 55289120 is 2198255.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 352082 + ... + 352238.

It is an arithmetic number, because the mean of its divisors is an integer number (1433376).

Almost surely, 2^55289120 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 55289120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68802048).

55289120 is an abundant number, since it is smaller than the sum of its proper divisors (82314976).

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

55289120 is a wasteful number, since it uses less digits than its factorization.

55289120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 55289120 is about 7435.6654039837. The cubic root of 55289120 is about 380.9604512973.

The spelling of 55289120 in words is "fifty-five million, two hundred eighty-nine thousand, one hundred twenty".