521352231 has 8 divisors (see below), whose sum is σ = 695332224. Its totient is φ = 347470200.

The previous prime is 521352211. The next prime is 521352283. The reversal of 521352231 is 132253125.

It is a happy number.

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

It is not a de Polignac number, because 521352231 - 2⁵ = 521352199 is a prime.

It is a super-2 number, since 2×521352231² = 543616297537354722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521352211) 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, 11011 + ... + 34116.

It is an arithmetic number, because the mean of its divisors is an integer number (86916528).

Almost surely, 2^521352231 is an apocalyptic number.

521352231 is a deficient number, since it is larger than the sum of its proper divisors (173979993).

521352231 is a wasteful number, since it uses less digits than its factorization.

521352231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48981.

The product of its digits is 1800, while the sum is 24.

The square root of 521352231 is about 22833.1388775175. The cubic root of 521352231 is about 804.8415932539.

The spelling of 521352231 in words is "five hundred twenty-one million, three hundred fifty-two thousand, two hundred thirty-one".