515430245 has 16 divisors (see below), whose sum is σ = 675706752. Its totient is φ = 374324160.

The previous prime is 515430241. The next prime is 515430269. The reversal of 515430245 is 542034515.

515430245 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 515430245 - 2² = 515430241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515430241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34559 + ... + 47171.

It is an arithmetic number, because the mean of its divisors is an integer number (42231672).

Almost surely, 2^515430245 is an apocalyptic number.

515430245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

515430245 is a deficient number, since it is larger than the sum of its proper divisors (160276507).

515430245 is a wasteful number, since it uses less digits than its factorization.

515430245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 515430245 is about 22703.0888867572. The cubic root of 515430245 is about 801.7826108603.

The spelling of 515430245 in words is "five hundred fifteen million, four hundred thirty thousand, two hundred forty-five".