522530381 has 8 divisors (see below), whose sum is σ = 568999200. Its totient is φ = 477958320.

The previous prime is 522530369. The next prime is 522530431. The reversal of 522530381 is 183035225.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522530381 is a prime.

It is a super-2 number, since 2×522530381² = 546075998136010322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522530321) 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, 473615 + ... + 474716.

It is an arithmetic number, because the mean of its divisors is an integer number (71124900).

Almost surely, 2^522530381 is an apocalyptic number.

It is an amenable number.

522530381 is a deficient number, since it is larger than the sum of its proper divisors (46468819).

522530381 is a wasteful number, since it uses less digits than its factorization.

522530381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948379.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 522530381 is about 22858.9234435920. The cubic root of 522530381 is about 805.4473965845.

The spelling of 522530381 in words is "five hundred twenty-two million, five hundred thirty thousand, three hundred eighty-one".