53388340 has 12 divisors (see below), whose sum is σ = 112115556. Its totient is φ = 21355328.

The previous prime is 53388323. The next prime is 53388343. The reversal of 53388340 is 4388335.

It can be written as a sum of positive squares in 2 ways, for example, as 37675044 + 15713296 = 6138^2 + 3964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53388296 and 53388305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53388343) 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, 1334689 + ... + 1334728.

It is an arithmetic number, because the mean of its divisors is an integer number (9342963).

Almost surely, 2^53388340 is an apocalyptic number.

It is an amenable number.

53388340 is an abundant number, since it is smaller than the sum of its proper divisors (58727216).

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

53388340 is a wasteful number, since it uses less digits than its factorization.

53388340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669426 (or 2669424 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 53388340 is about 7306.7325118688. The cubic root of 53388340 is about 376.5437752264.

The spelling of 53388340 in words is "fifty-three million, three hundred eighty-eight thousand, three hundred forty".