172630253 has 2 divisors, whose sum is σ = 172630254. Its totient is φ = 172630252.

The previous prime is 172630231. The next prime is 172630277. The reversal of 172630253 is 352036271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172055689 + 574564 = 13117^2 + 758^2 .

It is an emirp because it is prime and its reverse (352036271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172630253 - 2⁸ = 172629997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172630153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86315126 + 86315127.

It is an arithmetic number, because the mean of its divisors is an integer number (86315127).

Almost surely, 2^172630253 is an apocalyptic number.

It is an amenable number.

172630253 is a deficient number, since it is larger than the sum of its proper divisors (1).

172630253 is an equidigital number, since it uses as much as digits as its factorization.

172630253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 172630253 is about 13138.8832478259. The cubic root of 172630253 is about 556.8082169983.

The spelling of 172630253 in words is "one hundred seventy-two million, six hundred thirty thousand, two hundred fifty-three".