522521031 has 4 divisors (see below), whose sum is σ = 696694712. Its totient is φ = 348347352.

The previous prime is 522521029. The next prime is 522521057. The reversal of 522521031 is 130125225.

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

It is not a de Polignac number, because 522521031 - 2¹ = 522521029 is a prime.

It is a super-2 number, since 2×522521031² = 546056455674605922, 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 = 522520989 and 522521007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522522031) 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, 87086836 + ... + 87086841.

It is an arithmetic number, because the mean of its divisors is an integer number (174173678).

Almost surely, 2^522521031 is an apocalyptic number.

522521031 is a deficient number, since it is larger than the sum of its proper divisors (174173681).

522521031 is a wasteful number, since it uses less digits than its factorization.

522521031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174173680.

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

The square root of 522521031 is about 22858.7189273590. The cubic root of 522521031 is about 805.4425924122.

Adding to 522521031 its reverse (130125225), we get a palindrome (652646256).

The spelling of 522521031 in words is "five hundred twenty-two million, five hundred twenty-one thousand, thirty-one".