172212793 has 2 divisors, whose sum is σ = 172212794. Its totient is φ = 172212792.

The previous prime is 172212787. The next prime is 172212823. The reversal of 172212793 is 397212271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171819664 + 393129 = 13108^2 + 627^2 .

It is a cyclic number.

It is not a de Polignac number, because 172212793 - 2⁹ = 172212281 is a prime.

It is not a weakly prime, because it can be changed into another prime (172212773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86106396 + 86106397.

It is an arithmetic number, because the mean of its divisors is an integer number (86106397).

Almost surely, 2^172212793 is an apocalyptic number.

It is an amenable number.

172212793 is a deficient number, since it is larger than the sum of its proper divisors (1).

172212793 is an equidigital number, since it uses as much as digits as its factorization.

172212793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 172212793 is about 13122.9871980430. The cubic root of 172212793 is about 556.3590242387.

The spelling of 172212793 in words is "one hundred seventy-two million, two hundred twelve thousand, seven hundred ninety-three".