521459497 has 8 divisors (see below), whose sum is σ = 562454144. Its totient is φ = 480590928.

The previous prime is 521459489. The next prime is 521459539. The reversal of 521459497 is 794954125.

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 521459497 - 2³ = 521459489 is a prime.

It is a super-2 number, since 2×521459497² = 543840014022986018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521459417) 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, 22833 + ... + 39550.

It is an arithmetic number, because the mean of its divisors is an integer number (70306768).

Almost surely, 2^521459497 is an apocalyptic number.

It is an amenable number.

521459497 is a deficient number, since it is larger than the sum of its proper divisors (40994647).

521459497 is a wasteful number, since it uses less digits than its factorization.

521459497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63039.

The product of its digits is 453600, while the sum is 46.

The square root of 521459497 is about 22835.4876672253. The cubic root of 521459497 is about 804.8967870449.

The spelling of 521459497 in words is "five hundred twenty-one million, four hundred fifty-nine thousand, four hundred ninety-seven".