521126897 has 8 divisors (see below), whose sum is σ = 545923200. Its totient is φ = 496785744.

The previous prime is 521126887. The next prime is 521126909. The reversal of 521126897 is 798621125.

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 521126897 - 2¹² = 521122801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521126887) 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, 111443 + ... + 116024.

It is an arithmetic number, because the mean of its divisors is an integer number (68240400).

Almost surely, 2^521126897 is an apocalyptic number.

It is an amenable number.

521126897 is a deficient number, since it is larger than the sum of its proper divisors (24796303).

521126897 is a wasteful number, since it uses less digits than its factorization.

521126897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227575.

The product of its digits is 60480, while the sum is 41.

The square root of 521126897 is about 22828.2039810406. The cubic root of 521126897 is about 804.7256228348.

The spelling of 521126897 in words is "five hundred twenty-one million, one hundred twenty-six thousand, eight hundred ninety-seven".