55210272 has 144 divisors (see below), whose sum is σ = 162697248. Its totient is φ = 16373760.

The previous prime is 55210261. The next prime is 55210279. The reversal of 55210272 is 27201255.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (55210279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 665143 + ... + 665225.

It is an arithmetic number, because the mean of its divisors is an integer number (1129842).

Almost surely, 2^55210272 is an apocalyptic number.

55210272 is a gapful number since it is divisible by the number (52) 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 55210272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81348624).

55210272 is an abundant number, since it is smaller than the sum of its proper divisors (107486976).

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

55210272 is a wasteful number, since it uses less digits than its factorization.

55210272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 55210272 is about 7430.3614986083. The cubic root of 55210272 is about 380.7792688147.

The spelling of 55210272 in words is "fifty-five million, two hundred ten thousand, two hundred seventy-two".