53815356 has 36 divisors (see below), whose sum is σ = 155467312. Its totient is φ = 15375744.

The previous prime is 53815313. The next prime is 53815367. The reversal of 53815356 is 65351835.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 53815356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106525 + ... + 107028.

Almost surely, 2^53815356 is an apocalyptic number.

It is an amenable number.

53815356 is an abundant number, since it is smaller than the sum of its proper divisors (101651956).

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

53815356 is a wasteful number, since it uses less digits than its factorization.

53815356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213570 (or 213565 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 53815356 is about 7335.8950374170. The cubic root of 53815356 is about 377.5450140027.

It can be divided in two parts, 53 and 815356, that added together give a square (815409 = 903²).

The spelling of 53815356 in words is "fifty-three million, eight hundred fifteen thousand, three hundred fifty-six".