53533887 has 16 divisors (see below), whose sum is σ = 81966720. Its totient is φ = 30736800.

The previous prime is 53533877. The next prime is 53533891. The reversal of 53533887 is 78833535.

It is not a de Polignac number, because 53533887 - 2⁷ = 53533759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533817) 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, 42064 + ... + 43317.

It is an arithmetic number, because the mean of its divisors is an integer number (5122920).

Almost surely, 2^53533887 is an apocalyptic number.

53533887 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

53533887 is a deficient number, since it is larger than the sum of its proper divisors (28432833).

53533887 is a wasteful number, since it uses less digits than its factorization.

53533887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85414.

The product of its digits is 302400, while the sum is 42.

The square root of 53533887 is about 7316.6855200972. The cubic root of 53533887 is about 376.8856419416.

The spelling of 53533887 in words is "fifty-three million, five hundred thirty-three thousand, eight hundred eighty-seven".