156116417 has 2 divisors, whose sum is σ = 156116418. Its totient is φ = 156116416.

The previous prime is 156116371. The next prime is 156116437. The reversal of 156116417 is 714611651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155775361 + 341056 = 12481^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 156116417 - 2⁸ = 156116161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156116437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78058208 + 78058209.

It is an arithmetic number, because the mean of its divisors is an integer number (78058209).

Almost surely, 2^156116417 is an apocalyptic number.

It is an amenable number.

156116417 is a deficient number, since it is larger than the sum of its proper divisors (1).

156116417 is an equidigital number, since it uses as much as digits as its factorization.

156116417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 156116417 is about 12494.6555374688. The cubic root of 156116417 is about 538.4551376262.

The spelling of 156116417 in words is "one hundred fifty-six million, one hundred sixteen thousand, four hundred seventeen".