52168531 has 4 divisors (see below), whose sum is σ = 54436752. Its totient is φ = 49900312.

The previous prime is 52168517. The next prime is 52168553. The reversal of 52168531 is 13586125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52168531 is a prime.

It is a super-2 number, since 2×52168531² = 5443111253395922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52168493 and 52168502.

It is not an unprimeable number, because it can be changed into a prime (52168511) 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, 1134076 + ... + 1134121.

It is an arithmetic number, because the mean of its divisors is an integer number (13609188).

Almost surely, 2^52168531 is an apocalyptic number.

52168531 is a deficient number, since it is larger than the sum of its proper divisors (2268221).

52168531 is a wasteful number, since it uses less digits than its factorization.

52168531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268220.

The product of its digits is 7200, while the sum is 31.

The square root of 52168531 is about 7222.7786204480. The cubic root of 52168531 is about 373.6539140700.

The spelling of 52168531 in words is "fifty-two million, one hundred sixty-eight thousand, five hundred thirty-one".