55018616 has 8 divisors (see below), whose sum is σ = 103159920. Its totient is φ = 27509304.

The previous prime is 55018573. The next prime is 55018631. The reversal of 55018616 is 61681055.

It is a happy number.

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, 3438656 + ... + 3438671.

It is an arithmetic number, because the mean of its divisors is an integer number (12894990).

Almost surely, 2^55018616 is an apocalyptic number.

It is an amenable number.

55018616 is a deficient number, since it is larger than the sum of its proper divisors (48141304).

55018616 is a wasteful number, since it uses less digits than its factorization.

55018616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877333 (or 6877329 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 55018616 is about 7417.4534713741. The cubic root of 55018616 is about 380.3381477592.

The spelling of 55018616 in words is "fifty-five million, eighteen thousand, six hundred sixteen".