52731881 has 4 divisors (see below), whose sum is σ = 53518992. Its totient is φ = 51944772.

The previous prime is 52731869. The next prime is 52731923. The reversal of 52731881 is 18813725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52731881 - 2⁶ = 52731817 is a prime.

It is a super-2 number, since 2×52731881² = 5561302547596322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52731181) 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, 393455 + ... + 393588.

It is an arithmetic number, because the mean of its divisors is an integer number (13379748).

Almost surely, 2^52731881 is an apocalyptic number.

It is an amenable number.

52731881 is a deficient number, since it is larger than the sum of its proper divisors (787111).

52731881 is an equidigital number, since it uses as much as digits as its factorization.

52731881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787110.

The product of its digits is 13440, while the sum is 35.

The square root of 52731881 is about 7261.6720526336. The cubic root of 52731881 is about 374.9940882031.

The spelling of 52731881 in words is "fifty-two million, seven hundred thirty-one thousand, eight hundred eighty-one".