55195618 has 4 divisors (see below), whose sum is σ = 82793430. Its totient is φ = 27597808.

The previous prime is 55195577. The next prime is 55195663. The reversal of 55195618 is 81659155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81659155 = 5 ⋅16331831.

It can be written as a sum of positive squares in only one way, i.e., 54952569 + 243049 = 7413^2 + 493^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13798903 + ... + 13798906.

Almost surely, 2^55195618 is an apocalyptic number.

55195618 is a deficient number, since it is larger than the sum of its proper divisors (27597812).

55195618 is a wasteful number, since it uses less digits than its factorization.

55195618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27597811.

The product of its digits is 54000, while the sum is 40.

The square root of 55195618 is about 7429.3753438630. The cubic root of 55195618 is about 380.7455768164.

It can be divided in two parts, 551 and 95618, that added together give a palindrome (96169).

The spelling of 55195618 in words is "fifty-five million, one hundred ninety-five thousand, six hundred eighteen".