522000381 has 16 divisors (see below), whose sum is σ = 811664000. Its totient is φ = 298285344.

The previous prime is 522000379. The next prime is 522000439. The reversal of 522000381 is 183000225.

It is not a de Polignac number, because 522000381 - 2¹ = 522000379 is a prime.

It is a super-2 number, since 2×522000381² = 544968795528290322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522000361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252616 + ... + 254673.

It is an arithmetic number, because the mean of its divisors is an integer number (50729000).

Almost surely, 2^522000381 is an apocalyptic number.

It is an amenable number.

522000381 is a deficient number, since it is larger than the sum of its proper divisors (289663619).

522000381 is an equidigital number, since it uses as much as digits as its factorization.

522000381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507313 (or 507299 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 522000381 is about 22847.3276555487. The cubic root of 522000381 is about 805.1749840149.

The spelling of 522000381 in words is "five hundred twenty-two million, three hundred eighty-one", and thus it is an aban number.