515120399 has 2 divisors, whose sum is σ = 515120400. Its totient is φ = 515120398.

The previous prime is 515120393. The next prime is 515120429. The reversal of 515120399 is 993021515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515120399 - 2⁸ = 515120143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515120393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257560199 + 257560200.

It is an arithmetic number, because the mean of its divisors is an integer number (257560200).

Almost surely, 2^515120399 is an apocalyptic number.

515120399 is a deficient number, since it is larger than the sum of its proper divisors (1).

515120399 is an equidigital number, since it uses as much as digits as its factorization.

515120399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 515120399 is about 22696.2639877139. The cubic root of 515120399 is about 801.6219173205.

The spelling of 515120399 in words is "five hundred fifteen million, one hundred twenty thousand, three hundred ninety-nine".