172608253 has 2 divisors, whose sum is σ = 172608254. Its totient is φ = 172608252.

The previous prime is 172608239. The next prime is 172608257. The reversal of 172608253 is 352806271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109453444 + 63154809 = 10462^2 + 7947^2 .

It is a cyclic number.

It is not a de Polignac number, because 172608253 - 2⁹ = 172607741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172608257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86304126 + 86304127.

It is an arithmetic number, because the mean of its divisors is an integer number (86304127).

Almost surely, 2^172608253 is an apocalyptic number.

It is an amenable number.

172608253 is a deficient number, since it is larger than the sum of its proper divisors (1).

172608253 is an equidigital number, since it uses as much as digits as its factorization.

172608253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 172608253 is about 13138.0460114889. The cubic root of 172608253 is about 556.7845627797.

The spelling of 172608253 in words is "one hundred seventy-two million, six hundred eight thousand, two hundred fifty-three".