55273040 has 40 divisors (see below), whose sum is σ = 129400200. Its totient is φ = 21956096.

The previous prime is 55273037. The next prime is 55273051. The reversal of 55273040 is 4037255.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 55234624 = 196^2 + 7432^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9602 + ... + 14238.

It is an arithmetic number, because the mean of its divisors is an integer number (3235005).

Almost surely, 2^55273040 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 55273040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64700100).

55273040 is an abundant number, since it is smaller than the sum of its proper divisors (74127160).

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

55273040 is a wasteful number, since it uses less digits than its factorization.

55273040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799 (or 4793 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 55273040 is about 7434.5840502344. The cubic root of 55273040 is about 380.9235155311.

The spelling of 55273040 in words is "fifty-five million, two hundred seventy-three thousand, forty".