53688331 has 4 divisors (see below), whose sum is σ = 53703000. Its totient is φ = 53673664.

The previous prime is 53688307. The next prime is 53688343. The reversal of 53688331 is 13388635.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53688331 - 2¹⁹ = 53164043 is a prime.

It is a super-2 number, since 2×53688331² = 5764873771131122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53688391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3195 + ... + 10843.

It is an arithmetic number, because the mean of its divisors is an integer number (13425750).

Almost surely, 2^53688331 is an apocalyptic number.

53688331 is a deficient number, since it is larger than the sum of its proper divisors (14669).

53688331 is an equidigital number, since it uses as much as digits as its factorization.

53688331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14668.

The product of its digits is 51840, while the sum is 37.

The square root of 53688331 is about 7327.2321513652. The cubic root of 53688331 is about 377.2477293527.

The spelling of 53688331 in words is "fifty-three million, six hundred eighty-eight thousand, three hundred thirty-one".