79155017 has 2 divisors, whose sum is σ = 79155018. Its totient is φ = 79155016.

The previous prime is 79155001. The next prime is 79155019. The reversal of 79155017 is 71055197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73342096 + 5812921 = 8564^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 79155017 - 2⁴ = 79155001 is a prime.

Together with 79155019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79155019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39577508 + 39577509.

It is an arithmetic number, because the mean of its divisors is an integer number (39577509).

Almost surely, 2^79155017 is an apocalyptic number.

It is an amenable number.

79155017 is a deficient number, since it is larger than the sum of its proper divisors (1).

79155017 is an equidigital number, since it uses as much as digits as its factorization.

79155017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11025, while the sum is 35.

The square root of 79155017 is about 8896.9105311900. The cubic root of 79155017 is about 429.3645146944.

The spelling of 79155017 in words is "seventy-nine million, one hundred fifty-five thousand, seventeen".