515016091 has 2 divisors, whose sum is σ = 515016092. Its totient is φ = 515016090.

The previous prime is 515016053. The next prime is 515016097. The reversal of 515016091 is 190610515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515016091 is a prime.

It is a Chen prime.

It is equal to p_27103933 and since 515016091 and 27103933 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (515016097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257508045 + 257508046.

It is an arithmetic number, because the mean of its divisors is an integer number (257508046).

Almost surely, 2^515016091 is an apocalyptic number.

515016091 is a deficient number, since it is larger than the sum of its proper divisors (1).

515016091 is an equidigital number, since it uses as much as digits as its factorization.

515016091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 515016091 is about 22693.9659601402. The cubic root of 515016091 is about 801.5678062017.

The spelling of 515016091 in words is "five hundred fifteen million, sixteen thousand, ninety-one".