52423531 has 4 divisors (see below), whose sum is σ = 53087200. Its totient is φ = 51759864.

The previous prime is 52423523. The next prime is 52423621. The reversal of 52423531 is 13532425.

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 52423531 - 2³ = 52423523 is a prime.

It is a super-2 number, since 2×52423531² = 5496453205015922, 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 = 52423496 and 52423505.

It is not an unprimeable number, because it can be changed into a prime (52423031) 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, 331716 + ... + 331873.

It is an arithmetic number, because the mean of its divisors is an integer number (13271800).

Almost surely, 2^52423531 is an apocalyptic number.

52423531 is a deficient number, since it is larger than the sum of its proper divisors (663669).

52423531 is an equidigital number, since it uses as much as digits as its factorization.

52423531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663668.

The product of its digits is 3600, while the sum is 25.

The square root of 52423531 is about 7240.4095878617. The cubic root of 52423531 is about 374.2617321078.

Adding to 52423531 its reverse (13532425), we get a palindrome (65955956).

The spelling of 52423531 in words is "fifty-two million, four hundred twenty-three thousand, five hundred thirty-one".