55080864 has 96 divisors (see below), whose sum is σ = 165090240. Its totient is φ = 17853696.

The previous prime is 55080863. The next prime is 55080881. The reversal of 55080864 is 46808055.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55080863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31107 + ... + 32829.

It is an arithmetic number, because the mean of its divisors is an integer number (1719690).

Almost surely, 2^55080864 is an apocalyptic number.

55080864 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 55080864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82545120).

55080864 is an abundant number, since it is smaller than the sum of its proper divisors (110009376).

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

55080864 is a wasteful number, since it uses less digits than its factorization.

55080864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1765 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 55080864 is about 7421.6483344335. The cubic root of 55080864 is about 380.4815317482.

The spelling of 55080864 in words is "fifty-five million, eighty thousand, eight hundred sixty-four".