515125427 has 2 divisors, whose sum is σ = 515125428. Its totient is φ = 515125426.

The previous prime is 515125421. The next prime is 515125439. The reversal of 515125427 is 724521515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 515125427 - 2¹⁰ = 515124403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 515125393 and 515125402.

It is not a weakly prime, because it can be changed into another prime (515125421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257562713 + 257562714.

It is an arithmetic number, because the mean of its divisors is an integer number (257562714).

Almost surely, 2^515125427 is an apocalyptic number.

515125427 is a deficient number, since it is larger than the sum of its proper divisors (1).

515125427 is an equidigital number, since it uses as much as digits as its factorization.

515125427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14000, while the sum is 32.

The square root of 515125427 is about 22696.3747545726. The cubic root of 515125427 is about 801.6245254758.

The spelling of 515125427 in words is "five hundred fifteen million, one hundred twenty-five thousand, four hundred twenty-seven".