515460091 has 2 divisors, whose sum is σ = 515460092. Its totient is φ = 515460090.

The previous prime is 515460073. The next prime is 515460097. The reversal of 515460091 is 190064515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515460091 - 2⁵ = 515460059 is a prime.

It is not a weakly prime, because it can be changed into another prime (515460097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257730045 + 257730046.

It is an arithmetic number, because the mean of its divisors is an integer number (257730046).

Almost surely, 2^515460091 is an apocalyptic number.

515460091 is a deficient number, since it is larger than the sum of its proper divisors (1).

515460091 is an equidigital number, since it uses as much as digits as its factorization.

515460091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 515460091 is about 22703.7461886800. The cubic root of 515460091 is about 801.7980863084.

The spelling of 515460091 in words is "five hundred fifteen million, four hundred sixty thousand, ninety-one".