523120099 has 4 divisors (see below), whose sum is σ = 523181736. Its totient is φ = 523058464.

The previous prime is 523120063. The next prime is 523120109. The reversal of 523120099 is 990021325.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 523120099 - 2²¹ = 521022947 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523120099.

It is not an unprimeable number, because it can be changed into a prime (523120049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15574 + ... + 35899.

It is an arithmetic number, because the mean of its divisors is an integer number (130795434).

Almost surely, 2^523120099 is an apocalyptic number.

523120099 is a deficient number, since it is larger than the sum of its proper divisors (61637).

523120099 is a wasteful number, since it uses less digits than its factorization.

523120099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61636.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 523120099 is about 22871.8188826337. The cubic root of 523120099 is about 805.7502869490.

The spelling of 523120099 in words is "five hundred twenty-three million, one hundred twenty thousand, ninety-nine".