55522272 has 96 divisors (see below), whose sum is σ = 166253472. Its totient is φ = 16072704.

The previous prime is 55522249. The next prime is 55522273. The reversal of 55522272 is 27222555.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55522273) 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, 19908 + ... + 22524.

It is an arithmetic number, because the mean of its divisors is an integer number (1731807).

Almost surely, 2^55522272 is an apocalyptic number.

55522272 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 55522272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83126736).

55522272 is an abundant number, since it is smaller than the sum of its proper divisors (110731200).

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

55522272 is a wasteful number, since it uses less digits than its factorization.

55522272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660 (or 2652 counting only the distinct ones).

The product of its digits is 14000, while the sum is 30.

The square root of 55522272 is about 7451.3268617072. The cubic root of 55522272 is about 381.4951986419.

The spelling of 55522272 in words is "fifty-five million, five hundred twenty-two thousand, two hundred seventy-two".