53775618 has 16 divisors (see below), whose sum is σ = 115824576. Its totient is φ = 16546320.

The previous prime is 53775611. The next prime is 53775629. The reversal of 53775618 is 81657735.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53775618.

It is not an unprimeable number, because it can be changed into a prime (53775611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344638 + ... + 344793.

It is an arithmetic number, because the mean of its divisors is an integer number (7239036).

Almost surely, 2^53775618 is an apocalyptic number.

53775618 is an abundant number, since it is smaller than the sum of its proper divisors (62048958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53775618 is a wasteful number, since it uses less digits than its factorization.

53775618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689449.

The product of its digits is 176400, while the sum is 42.

The square root of 53775618 is about 7333.1860742790. The cubic root of 53775618 is about 377.4520629742.

The spelling of 53775618 in words is "fifty-three million, seven hundred seventy-five thousand, six hundred eighteen".