521085099 has 8 divisors (see below), whose sum is σ = 709562880. Its totient is φ = 339998696.

The previous prime is 521085091. The next prime is 521085101. The reversal of 521085099 is 990580125.

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 521085099 - 2³ = 521085091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521085091) 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, 1847679 + ... + 1847960.

It is an arithmetic number, because the mean of its divisors is an integer number (88695360).

Almost surely, 2^521085099 is an apocalyptic number.

521085099 is a deficient number, since it is larger than the sum of its proper divisors (188477781).

521085099 is a wasteful number, since it uses less digits than its factorization.

521085099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695689.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 521085099 is about 22827.2884723526. The cubic root of 521085099 is about 804.7041073965.

It can be divided in two parts, 5210 and 85099, that added together give a palindrome (90309).

The spelling of 521085099 in words is "five hundred twenty-one million, eighty-five thousand, ninety-nine".