521427163 has 8 divisors (see below), whose sum is σ = 542124000. Its totient is φ = 500911488.

The previous prime is 521427131. The next prime is 521427169. The reversal of 521427163 is 361724125.

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 521427163 - 2⁵ = 521427131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521427169) 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, 39406 + ... + 50947.

It is an arithmetic number, because the mean of its divisors is an integer number (67765500).

Almost surely, 2^521427163 is an apocalyptic number.

521427163 is a deficient number, since it is larger than the sum of its proper divisors (20696837).

521427163 is a wasteful number, since it uses less digits than its factorization.

521427163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90581.

The product of its digits is 10080, while the sum is 31.

The square root of 521427163 is about 22834.7796792524. The cubic root of 521427163 is about 804.8801503609.

The spelling of 521427163 in words is "five hundred twenty-one million, four hundred twenty-seven thousand, one hundred sixty-three".