82151099 has 2 divisors, whose sum is σ = 82151100. Its totient is φ = 82151098.

The previous prime is 82151081. The next prime is 82151119. The reversal of 82151099 is 99015128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82151099 - 2²⁰ = 81102523 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82151059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41075549 + 41075550.

It is an arithmetic number, because the mean of its divisors is an integer number (41075550).

Almost surely, 2^82151099 is an apocalyptic number.

82151099 is a deficient number, since it is larger than the sum of its proper divisors (1).

82151099 is an equidigital number, since it uses as much as digits as its factorization.

82151099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 82151099 is about 9063.7243448816. The cubic root of 82151099 is about 434.7148331359.

The spelling of 82151099 in words is "eighty-two million, one hundred fifty-one thousand, ninety-nine".