522031987 has 8 divisors (see below), whose sum is σ = 544159440. Its totient is φ = 500179680.

The previous prime is 522031969. The next prime is 522032003. The reversal of 522031987 is 789130225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 522031987 - 2¹¹ = 522029939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522031957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64908 + ... + 72505.

It is an arithmetic number, because the mean of its divisors is an integer number (68019930).

Almost surely, 2^522031987 is an apocalyptic number.

522031987 is a deficient number, since it is larger than the sum of its proper divisors (22127453).

522031987 is a wasteful number, since it uses less digits than its factorization.

522031987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137573.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 522031987 is about 22848.0193233462. The cubic root of 522031987 is about 805.1912342246.

The spelling of 522031987 in words is "five hundred twenty-two million, thirty-one thousand, nine hundred eighty-seven".