522663387 has 4 divisors (see below), whose sum is σ = 696884520. Its totient is φ = 348442256.

The previous prime is 522663373. The next prime is 522663391. The reversal of 522663387 is 783366225.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 522663387 - 2⁴ = 522663371 is a prime.

It is a super-2 number, since 2×522663387² = 546354032220623538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (522661387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87110562 + ... + 87110567.

It is an arithmetic number, because the mean of its divisors is an integer number (174221130).

Almost surely, 2^522663387 is an apocalyptic number.

522663387 is a deficient number, since it is larger than the sum of its proper divisors (174221133).

522663387 is a wasteful number, since it uses less digits than its factorization.

522663387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174221132.

The product of its digits is 362880, while the sum is 42.

The square root of 522663387 is about 22861.8325380972. The cubic root of 522663387 is about 805.5157308875.

The spelling of 522663387 in words is "five hundred twenty-two million, six hundred sixty-three thousand, three hundred eighty-seven".