53533855 has 16 divisors (see below), whose sum is σ = 66686400. Its totient is φ = 41256096.

The previous prime is 53533853. The next prime is 53533859. The reversal of 53533855 is 55833535.

It is not a de Polignac number, because 53533855 - 2¹ = 53533853 is a prime.

It is a super-2 number, since 2×53533855² = 5731747262322050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121726 + ... + 122164.

It is an arithmetic number, because the mean of its divisors is an integer number (4167900).

Almost surely, 2^53533855 is an apocalyptic number.

53533855 is a deficient number, since it is larger than the sum of its proper divisors (13152545).

53533855 is an frugal number, since it uses more digits than its factorization.

53533855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 473 counting only the distinct ones).

The product of its digits is 135000, while the sum is 37.

The square root of 53533855 is about 7316.6833333144. The cubic root of 53533855 is about 376.8855668468.

The spelling of 53533855 in words is "fifty-three million, five hundred thirty-three thousand, eight hundred fifty-five".