521468831 has 8 divisors (see below), whose sum is σ = 568349040. Its totient is φ = 475555392.

The previous prime is 521468803. The next prime is 521468833. The reversal of 521468831 is 138864125.

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

It is not a de Polignac number, because 521468831 - 2⁶ = 521468767 is a prime.

It is a super-2 number, since 2×521468831² = 543859483409013122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521468833) 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, 240566 + ... + 242723.

It is an arithmetic number, because the mean of its divisors is an integer number (71043630).

Almost surely, 2^521468831 is an apocalyptic number.

521468831 is a deficient number, since it is larger than the sum of its proper divisors (46880209).

521468831 is a wasteful number, since it uses less digits than its factorization.

521468831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483385.

The product of its digits is 46080, while the sum is 38.

The square root of 521468831 is about 22835.6920411885. The cubic root of 521468831 is about 804.9015895028.

The spelling of 521468831 in words is "five hundred twenty-one million, four hundred sixty-eight thousand, eight hundred thirty-one".