522249987 has 24 divisors (see below), whose sum is σ = 817615296. Its totient is φ = 295630608.

The previous prime is 522249967. The next prime is 522250033. The reversal of 522249987 is 789942225.

It is not a de Polignac number, because 522249987 - 2²³ = 513861379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (522249967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 873 + ... + 32330.

It is an arithmetic number, because the mean of its divisors is an integer number (34067304).

Almost surely, 2^522249987 is an apocalyptic number.

522249987 is a deficient number, since it is larger than the sum of its proper divisors (295365309).

522249987 is a wasteful number, since it uses less digits than its factorization.

522249987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33327 (or 33320 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 522249987 is about 22852.7894796237. The cubic root of 522249987 is about 805.3033009594.

The spelling of 522249987 in words is "five hundred twenty-two million, two hundred forty-nine thousand, nine hundred eighty-seven".