172553197 has 2 divisors, whose sum is σ = 172553198. Its totient is φ = 172553196.

The previous prime is 172553191. The next prime is 172553209. The reversal of 172553197 is 791355271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169546441 + 3006756 = 13021^2 + 1734^2 .

It is a cyclic number.

It is not a de Polignac number, because 172553197 - 2³ = 172553189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172553191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86276598 + 86276599.

It is an arithmetic number, because the mean of its divisors is an integer number (86276599).

Almost surely, 2^172553197 is an apocalyptic number.

It is an amenable number.

172553197 is a deficient number, since it is larger than the sum of its proper divisors (1).

172553197 is an equidigital number, since it uses as much as digits as its factorization.

172553197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66150, while the sum is 40.

The square root of 172553197 is about 13135.9505556317. The cubic root of 172553197 is about 556.7253582126.

The spelling of 172553197 in words is "one hundred seventy-two million, five hundred fifty-three thousand, one hundred ninety-seven".