53361864 has 24 divisors (see below), whose sum is σ = 144521910. Its totient is φ = 17787264.

The previous prime is 53361859. The next prime is 53361871. The reversal of 53361864 is 46816335.

53361864 is a `hidden beast` number, since 5 + 33 + 618 + 6 + 4 = 666.

53361864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37822500 + 15539364 = 6150^2 + 3942^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370497 + ... + 370640.

Almost surely, 2^53361864 is an apocalyptic number.

It is an amenable number.

53361864 is an abundant number, since it is smaller than the sum of its proper divisors (91160046).

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

53361864 is a wasteful number, since it uses less digits than its factorization.

53361864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741149 (or 741142 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 53361864 is about 7304.9205334487. The cubic root of 53361864 is about 376.4815205503.

The spelling of 53361864 in words is "fifty-three million, three hundred sixty-one thousand, eight hundred sixty-four".