79155261 has 6 divisors (see below), whose sum is σ = 114335390. Its totient is φ = 52770168.

The previous prime is 79155253. The next prime is 79155277. The reversal of 79155261 is 16255197.

It can be written as a sum of positive squares in only one way, i.e., 52838361 + 26316900 = 7269^2 + 5130^2 .

It is not a de Polignac number, because 79155261 - 2³ = 79155253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79155221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4397506 + ... + 4397523.

Almost surely, 2^79155261 is an apocalyptic number.

It is an amenable number.

79155261 is a deficient number, since it is larger than the sum of its proper divisors (35180129).

79155261 is a wasteful number, since it uses less digits than its factorization.

79155261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8795035 (or 8795032 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 79155261 is about 8896.9242438047. The cubic root of 79155261 is about 429.3649558745.

The spelling of 79155261 in words is "seventy-nine million, one hundred fifty-five thousand, two hundred sixty-one".