55349618 has 4 divisors (see below), whose sum is σ = 83024430. Its totient is φ = 27674808.

The previous prime is 55349599. The next prime is 55349621. The reversal of 55349618 is 81694355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34492129 + 20857489 = 5873^2 + 4567^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13837403 + ... + 13837406.

Almost surely, 2^55349618 is an apocalyptic number.

55349618 is a deficient number, since it is larger than the sum of its proper divisors (27674812).

55349618 is a wasteful number, since it uses less digits than its factorization.

55349618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27674811.

The product of its digits is 129600, while the sum is 41.

The square root of 55349618 is about 7439.7323876602. The cubic root of 55349618 is about 381.0993511041.

The spelling of 55349618 in words is "fifty-five million, three hundred forty-nine thousand, six hundred eighteen".