79105157 has 2 divisors, whose sum is σ = 79105158. Its totient is φ = 79105156.

The previous prime is 79105141. The next prime is 79105177. The reversal of 79105157 is 75150197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46226401 + 32878756 = 6799^2 + 5734^2 .

It is a cyclic number.

It is not a de Polignac number, because 79105157 - 2⁴ = 79105141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79105177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39552578 + 39552579.

It is an arithmetic number, because the mean of its divisors is an integer number (39552579).

Almost surely, 2^79105157 is an apocalyptic number.

It is an amenable number.

79105157 is a deficient number, since it is larger than the sum of its proper divisors (1).

79105157 is an equidigital number, since it uses as much as digits as its factorization.

79105157 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 79105157 is about 8894.1079934977. The cubic root of 79105157 is about 429.2743430620.

The spelling of 79105157 in words is "seventy-nine million, one hundred five thousand, one hundred fifty-seven".