52212531 has 16 divisors (see below), whose sum is σ = 79769600. Its totient is φ = 29757888.

The previous prime is 52212521. The next prime is 52212571. The reversal of 52212531 is 13521225.

It is not a de Polignac number, because 52212531 - 2¹⁰ = 52211507 is a prime.

It is a super-2 number, since 2×52212531² = 5452296786851922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52212498 and 52212507.

It is not an unprimeable number, because it can be changed into a prime (52212521) 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, 5550 + ... + 11628.

It is an arithmetic number, because the mean of its divisors is an integer number (4985600).

Almost surely, 2^52212531 is an apocalyptic number.

52212531 is a deficient number, since it is larger than the sum of its proper divisors (27557069).

52212531 is a wasteful number, since it uses less digits than its factorization.

52212531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6498.

The product of its digits is 600, while the sum is 21.

The square root of 52212531 is about 7225.8238976604. The cubic root of 52212531 is about 373.7589336537.

Adding to 52212531 its reverse (13521225), we get a palindrome (65733756).

The spelling of 52212531 in words is "fifty-two million, two hundred twelve thousand, five hundred thirty-one".