518469121 has 4 divisors (see below), whose sum is σ = 519552000. Its totient is φ = 517386244.

The previous prime is 518469109. The next prime is 518469181. The reversal of 518469121 is 121964815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 518469121 - 2⁵ = 518469089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518469181) 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, 540721 + ... + 541678.

It is an arithmetic number, because the mean of its divisors is an integer number (129888000).

Almost surely, 2^518469121 is an apocalyptic number.

It is an amenable number.

518469121 is a deficient number, since it is larger than the sum of its proper divisors (1082879).

518469121 is a wasteful number, since it uses less digits than its factorization.

518469121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082878.

The product of its digits is 17280, while the sum is 37.

The square root of 518469121 is about 22769.9170178549. The cubic root of 518469121 is about 803.3552421191.

It can be divided in two parts, 5184 and 69121, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 518469121 in words is "five hundred eighteen million, four hundred sixty-nine thousand, one hundred twenty-one".