55273260 has 96 divisors (see below), whose sum is σ = 178762752. Its totient is φ = 12499200.

The previous prime is 55273249. The next prime is 55273297. The reversal of 55273260 is 6237255.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41769 + ... + 43071.

It is an arithmetic number, because the mean of its divisors is an integer number (1862112).

Almost surely, 2^55273260 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 55273260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89381376).

55273260 is an abundant number, since it is smaller than the sum of its proper divisors (123489492).

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

55273260 is a wasteful number, since it uses less digits than its factorization.

55273260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 55273260 is about 7434.5988459365. The cubic root of 55273260 is about 380.9240209195.

The spelling of 55273260 in words is "fifty-five million, two hundred seventy-three thousand, two hundred sixty".