521424115 has 12 divisors (see below), whose sum is σ = 632027232. Its totient is φ = 412968800.

The previous prime is 521424103. The next prime is 521424121. The reversal of 521424115 is 511424125.

It is not a de Polignac number, because 521424115 - 2⁹ = 521423603 is a prime.

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 521424115.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45894 + ... + 56116.

It is an arithmetic number, because the mean of its divisors is an integer number (52668936).

Almost surely, 2^521424115 is an apocalyptic number.

521424115 is a deficient number, since it is larger than the sum of its proper divisors (110603117).

521424115 is a wasteful number, since it uses less digits than its factorization.

521424115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430 (or 10329 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 521424115 is about 22834.7129388569. The cubic root of 521424115 is about 804.8785820501.

The spelling of 521424115 in words is "five hundred twenty-one million, four hundred twenty-four thousand, one hundred fifteen".