522254521 has 4 divisors (see below), whose sum is σ = 522386212. Its totient is φ = 522122832.

The previous prime is 522254503. The next prime is 522254561. The reversal of 522254521 is 125452225.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70224400 + 452030121 = 8380^2 + 21261^2 .

It is a cyclic number.

It is not a de Polignac number, because 522254521 - 2¹¹ = 522252473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 522254521.

It is not an unprimeable number, because it can be changed into a prime (522254561) 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, 59706 + ... + 67891.

It is an arithmetic number, because the mean of its divisors is an integer number (130596553).

Almost surely, 2^522254521 is an apocalyptic number.

It is an amenable number.

522254521 is a deficient number, since it is larger than the sum of its proper divisors (131691).

522254521 is a wasteful number, since it uses less digits than its factorization.

522254521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131690.

The product of its digits is 8000, while the sum is 28.

The square root of 522254521 is about 22852.8886795521. Note that the first 3 decimals coincide. The cubic root of 522254521 is about 805.3056314108.

The spelling of 522254521 in words is "five hundred twenty-two million, two hundred fifty-four thousand, five hundred twenty-one".