55528180 has 36 divisors (see below), whose sum is σ = 118455372. Its totient is φ = 21864960.

The previous prime is 55528169. The next prime is 55528181. The reversal of 55528180 is 8182555.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 708964 + 54819216 = 842^2 + 7404^2 .

It is a super-2 number, since 2×55528180² = 6166757548224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55528181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106320 + ... + 106840.

It is an arithmetic number, because the mean of its divisors is an integer number (3290427).

Almost surely, 2^55528180 is an apocalyptic number.

It is an amenable number.

55528180 is an abundant number, since it is smaller than the sum of its proper divisors (62927192).

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

55528180 is a wasteful number, since it uses less digits than its factorization.

55528180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 55528180 is about 7451.7232906221. The cubic root of 55528180 is about 381.5087295105.

The spelling of 55528180 in words is "fifty-five million, five hundred twenty-eight thousand, one hundred eighty".