52831387 has 4 divisors (see below), whose sum is σ = 60378736. Its totient is φ = 45284040.

The previous prime is 52831369. The next prime is 52831421. The reversal of 52831387 is 78313825.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52831387 - 2¹¹ = 52829339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52831327) 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, 3773664 + ... + 3773677.

It is an arithmetic number, because the mean of its divisors is an integer number (15094684).

Almost surely, 2^52831387 is an apocalyptic number.

52831387 is a deficient number, since it is larger than the sum of its proper divisors (7547349).

52831387 is an equidigital number, since it uses as much as digits as its factorization.

52831387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7547348.

The product of its digits is 40320, while the sum is 37.

The square root of 52831387 is about 7268.5202758196. The cubic root of 52831387 is about 375.2298135036.

It can be divided in two parts, 5283 and 1387, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 52831387 in words is "fifty-two million, eight hundred thirty-one thousand, three hundred eighty-seven".