55556072 has 32 divisors (see below), whose sum is σ = 122381280. Its totient is φ = 23309760.

The previous prime is 55556069. The next prime is 55556077. The reversal of 55556072 is 27065555.

It is not an unprimeable number, because it can be changed into a prime (55556077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23138 + ... + 25425.

It is an arithmetic number, because the mean of its divisors is an integer number (3824415).

Almost surely, 2^55556072 is an apocalyptic number.

55556072 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55556072 is an abundant number, since it is smaller than the sum of its proper divisors (66825208).

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

55556072 is a wasteful number, since it uses less digits than its factorization.

55556072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48593 (or 48589 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 55556072 is about 7453.5945690653. The cubic root of 55556072 is about 381.5725965434.

The spelling of 55556072 in words is "fifty-five million, five hundred fifty-six thousand, seventy-two".