515365423 has 2 divisors, whose sum is σ = 515365424. Its totient is φ = 515365422.

The previous prime is 515365399. The next prime is 515365451. The reversal of 515365423 is 324563515.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515365423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515365453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257682711 + 257682712.

It is an arithmetic number, because the mean of its divisors is an integer number (257682712).

Almost surely, 2^515365423 is an apocalyptic number.

515365423 is a deficient number, since it is larger than the sum of its proper divisors (1).

515365423 is an equidigital number, since it uses as much as digits as its factorization.

515365423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 34.

The square root of 515365423 is about 22701.6612387728. The cubic root of 515365423 is about 801.7489979503.

The spelling of 515365423 in words is "five hundred fifteen million, three hundred sixty-five thousand, four hundred twenty-three".