55173360 has 80 divisors (see below), whose sum is σ = 186595200. Its totient is φ = 13374720.

The previous prime is 55173353. The next prime is 55173367. The reversal of 55173360 is 6337155.

It is an interprime number because it is at equal distance from previous prime (55173353) and next prime (55173367).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55173367) 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, 7810 + ... + 13089.

It is an arithmetic number, because the mean of its divisors is an integer number (2332440).

Almost surely, 2^55173360 is an apocalyptic number.

It is an amenable number.

55173360 is an abundant number, since it is smaller than the sum of its proper divisors (131421840).

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

55173360 is a wasteful number, since it uses less digits than its factorization.

55173360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20926 (or 20920 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 55173360 is about 7427.8772203100. The cubic root of 55173360 is about 380.6943905402.

The spelling of 55173360 in words is "fifty-five million, one hundred seventy-three thousand, three hundred sixty".