7172053813 has 2 divisors, whose sum is σ = 7172053814. Its totient is φ = 7172053812.

The previous prime is 7172053769. The next prime is 7172053843. The reversal of 7172053813 is 3183502717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4564623844 + 2607429969 = 67562^2 + 51063^2 .

It is a cyclic number.

It is not a de Polignac number, because 7172053813 - 2²⁹ = 6635182901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7172053843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3586026906 + 3586026907.

It is an arithmetic number, because the mean of its divisors is an integer number (3586026907).

Almost surely, 2^7172053813 is an apocalyptic number.

It is an amenable number.

7172053813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7172053813 is an equidigital number, since it uses as much as digits as its factorization.

7172053813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 7172053813 is about 84687.9791528880. The cubic root of 7172053813 is about 1928.4772200004.

The spelling of 7172053813 in words is "seven billion, one hundred seventy-two million, fifty-three thousand, eight hundred thirteen".