522676021 has 4 divisors (see below), whose sum is σ = 597344032. Its totient is φ = 448008012.

The previous prime is 522675977. The next prime is 522676043. The reversal of 522676021 is 120676225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522676021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522676621) 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, 37333995 + ... + 37334008.

It is an arithmetic number, because the mean of its divisors is an integer number (149336008).

Almost surely, 2^522676021 is an apocalyptic number.

It is an amenable number.

522676021 is a deficient number, since it is larger than the sum of its proper divisors (74668011).

522676021 is an equidigital number, since it uses as much as digits as its factorization.

522676021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74668010.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 522676021 is about 22862.1088484855. The cubic root of 522676021 is about 805.5222212367.

The spelling of 522676021 in words is "five hundred twenty-two million, six hundred seventy-six thousand, twenty-one".