55535544 has 40 divisors (see below), whose sum is σ = 155552760. Its totient is φ = 18511632.

The previous prime is 55535521. The next prime is 55535569. The reversal of 55535544 is 44553555.

55535544 is a `hidden beast` number, since 55 + 53 + 554 + 4 = 666.

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 = 55535499 and 55535508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42204 + ... + 43499.

It is an arithmetic number, because the mean of its divisors is an integer number (3888819).

Almost surely, 2^55535544 is an apocalyptic number.

55535544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55535544 is an abundant number, since it is smaller than the sum of its proper divisors (100017216).

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

55535544 is a wasteful number, since it uses less digits than its factorization.

55535544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85721 (or 85708 counting only the distinct ones).

The product of its digits is 150000, while the sum is 36.

The square root of 55535544 is about 7452.2173881335. The cubic root of 55535544 is about 381.5255936570.

The spelling of 55535544 in words is "fifty-five million, five hundred thirty-five thousand, five hundred forty-four".