53231817 has 16 divisors (see below), whose sum is σ = 72942912. Its totient is φ = 34510080.

The previous prime is 53231771. The next prime is 53231861. The reversal of 53231817 is 71813235.

It is not a de Polignac number, because 53231817 - 2¹⁴ = 53215433 is a prime.

It is a super-2 number, since 2×53231817² = 5667252682242978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53231887) 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, 55738 + ... + 56684.

It is an arithmetic number, because the mean of its divisors is an integer number (4558932).

Almost surely, 2^53231817 is an apocalyptic number.

It is an amenable number.

53231817 is a deficient number, since it is larger than the sum of its proper divisors (19711095).

53231817 is a wasteful number, since it uses less digits than its factorization.

53231817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its digits is 5040, while the sum is 30.

The square root of 53231817 is about 7296.0137746580. The cubic root of 53231817 is about 376.1754335442.

It can be divided in two parts, 5323 and 1817, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 53231817 in words is "fifty-three million, two hundred thirty-one thousand, eight hundred seventeen".