55575572 has 12 divisors (see below), whose sum is σ = 104738676. Its totient is φ = 25650240.

The previous prime is 55575563. The next prime is 55575587. The reversal of 55575572 is 27557555.

It can be written as a sum of positive squares in 2 ways, for example, as 8844676 + 46730896 = 2974^2 + 6836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534329 + ... + 534432.

It is an arithmetic number, because the mean of its divisors is an integer number (8728223).

Almost surely, 2^55575572 is an apocalyptic number.

55575572 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55575572 is a deficient number, since it is larger than the sum of its proper divisors (49163104).

55575572 is a wasteful number, since it uses less digits than its factorization.

55575572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068778 (or 1068776 counting only the distinct ones).

The product of its digits is 306250, while the sum is 41.

The square root of 55575572 is about 7454.9025479881. The cubic root of 55575572 is about 381.6172349000.

The spelling of 55575572 in words is "fifty-five million, five hundred seventy-five thousand, five hundred seventy-two".