55120618 has 8 divisors (see below), whose sum is σ = 94492512. Its totient is φ = 23623116.

The previous prime is 55120601. The next prime is 55120631. The reversal of 55120618 is 81602155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968580 + ... + 1968607.

It is an arithmetic number, because the mean of its divisors is an integer number (11811564).

Almost surely, 2^55120618 is an apocalyptic number.

55120618 is a deficient number, since it is larger than the sum of its proper divisors (39371894).

55120618 is a wasteful number, since it uses less digits than its factorization.

55120618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937196.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 55120618 is about 7424.3260973640. The cubic root of 55120618 is about 380.5730458377.

The spelling of 55120618 in words is "fifty-five million, one hundred twenty thousand, six hundred eighteen".