156155099 has 2 divisors, whose sum is σ = 156155100. Its totient is φ = 156155098.

The previous prime is 156155071. The next prime is 156155117. The reversal of 156155099 is 990551651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156155099 is a prime.

It is not a weakly prime, because it can be changed into another prime (156155299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78077549 + 78077550.

It is an arithmetic number, because the mean of its divisors is an integer number (78077550).

Almost surely, 2^156155099 is an apocalyptic number.

156155099 is a deficient number, since it is larger than the sum of its proper divisors (1).

156155099 is an equidigital number, since it uses as much as digits as its factorization.

156155099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60750, while the sum is 41.

The square root of 156155099 is about 12496.2033834281. The cubic root of 156155099 is about 538.4996061538.

The spelling of 156155099 in words is "one hundred fifty-six million, one hundred fifty-five thousand, ninety-nine".