55362272 has 48 divisors (see below), whose sum is σ = 126010080. Its totient is φ = 23451648.

The previous prime is 55362271. The next prime is 55362283. The reversal of 55362272 is 27226355.

It is a super-2 number, since 2×55362272² = 6129962322003968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55362271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18548 + ... + 21324.

It is an arithmetic number, because the mean of its divisors is an integer number (2625210).

Almost surely, 2^55362272 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 55362272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63005040).

55362272 is an abundant number, since it is smaller than the sum of its proper divisors (70647808).

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

55362272 is a wasteful number, since it uses less digits than its factorization.

55362272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883 (or 2875 counting only the distinct ones).

The product of its digits is 25200, while the sum is 32.

The square root of 55362272 is about 7440.5827728747. The cubic root of 55362272 is about 381.1283911343.

The spelling of 55362272 in words is "fifty-five million, three hundred sixty-two thousand, two hundred seventy-two".