52512031 has 16 divisors (see below), whose sum is σ = 65324448. Its totient is φ = 41472000.

The previous prime is 52512023. The next prime is 52512037. The reversal of 52512031 is 13021525.

It is a 12-Lehmer number, since φ(52512031) divides (52512031-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 52512031 - 2³ = 52512023 is a prime.

It is a super-2 number, since 2×52512031² = 5515026799489922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52512037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8370 + ... + 13231.

It is an arithmetic number, because the mean of its divisors is an integer number (4082778).

Almost surely, 2^52512031 is an apocalyptic number.

52512031 is a deficient number, since it is larger than the sum of its proper divisors (12812417).

52512031 is a wasteful number, since it uses less digits than its factorization.

52512031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21642.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 52512031 is about 7246.5185434110. The cubic root of 52512031 is about 374.4722199140.

Adding to 52512031 its reverse (13021525), we get a palindrome (65533556).

The spelling of 52512031 in words is "fifty-two million, five hundred twelve thousand, thirty-one".