7073172157 has 2 divisors, whose sum is σ = 7073172158. Its totient is φ = 7073172156.

The previous prime is 7073172149. The next prime is 7073172179. The reversal of 7073172157 is 7512713707.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6655133241 + 418038916 = 81579^2 + 20446^2 .

It is a cyclic number.

It is not a de Polignac number, because 7073172157 - 2³ = 7073172149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7073175157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3536586078 + 3536586079.

It is an arithmetic number, because the mean of its divisors is an integer number (3536586079).

Almost surely, 2^7073172157 is an apocalyptic number.

It is an amenable number.

7073172157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7073172157 is an equidigital number, since it uses as much as digits as its factorization.

7073172157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72030, while the sum is 40.

The square root of 7073172157 is about 84102.1531056132. The cubic root of 7073172157 is about 1919.5734871652.

The spelling of 7073172157 in words is "seven billion, seventy-three million, one hundred seventy-two thousand, one hundred fifty-seven".