55527228 has 48 divisors (see below), whose sum is σ = 148932000. Its totient is φ = 17869824.

The previous prime is 55527193. The next prime is 55527229. The reversal of 55527228 is 82272555.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55527192 and 55527201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55527229) 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, 5733 + ... + 11996.

It is an arithmetic number, because the mean of its divisors is an integer number (3102750).

Almost surely, 2^55527228 is an apocalyptic number.

55527228 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

55527228 is an abundant number, since it is smaller than the sum of its proper divisors (93404772).

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

55527228 is a wasteful number, since it uses less digits than its factorization.

55527228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771 (or 17763 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 55527228 is about 7451.6594125067. The cubic root of 55527228 is about 381.5065492458.

It can be divided in two parts, 55527 and 228, that added together give a palindrome (55755).

The spelling of 55527228 in words is "fifty-five million, five hundred twenty-seven thousand, two hundred twenty-eight".