55615544 has 8 divisors (see below), whose sum is σ = 104279160. Its totient is φ = 27807768.

The previous prime is 55615537. The next prime is 55615559. The reversal of 55615544 is 44551655.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3475964 + ... + 3475979.

It is an arithmetic number, because the mean of its divisors is an integer number (13034895).

Almost surely, 2^55615544 is an apocalyptic number.

It is an amenable number.

55615544 is a deficient number, since it is larger than the sum of its proper divisors (48663616).

55615544 is a wasteful number, since it uses less digits than its factorization.

55615544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951949 (or 6951945 counting only the distinct ones).

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

The square root of 55615544 is about 7457.5829864642. The cubic root of 55615544 is about 381.7087040350.

The spelling of 55615544 in words is "fifty-five million, six hundred fifteen thousand, five hundred forty-four".