55556144 has 40 divisors (see below), whose sum is σ = 123423648. Its totient is φ = 23731200.

The previous prime is 55556143. The next prime is 55556147. The reversal of 55556144 is 44165555.

55556144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55556144² = 6172970272297472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55556143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44294 + ... + 45530.

Almost surely, 2^55556144 is an apocalyptic number.

It is an amenable number.

55556144 is an abundant number, since it is smaller than the sum of its proper divisors (67867504).

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

55556144 is a wasteful number, since it uses less digits than its factorization.

55556144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1647 counting only the distinct ones).

The product of its digits is 60000, while the sum is 35.

The square root of 55556144 is about 7453.5993989481. The cubic root of 55556144 is about 381.5727613812.

The spelling of 55556144 in words is "fifty-five million, five hundred fifty-six thousand, one hundred forty-four".