516154091 has 2 divisors, whose sum is σ = 516154092. Its totient is φ = 516154090.

The previous prime is 516154087. The next prime is 516154097. The reversal of 516154091 is 190451615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516154091 - 2² = 516154087 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (516154097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258077045 + 258077046.

It is an arithmetic number, because the mean of its divisors is an integer number (258077046).

Almost surely, 2^516154091 is an apocalyptic number.

516154091 is a deficient number, since it is larger than the sum of its proper divisors (1).

516154091 is an equidigital number, since it uses as much as digits as its factorization.

516154091 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 32.

The square root of 516154091 is about 22719.0248690387. The cubic root of 516154091 is about 802.1577638987.

The spelling of 516154091 in words is "five hundred sixteen million, one hundred fifty-four thousand, ninety-one".