172553 has 2 divisors, whose sum is σ = 172554. Its totient is φ = 172552.

The previous prime is 172541. The next prime is 172561. The reversal of 172553 is 355271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 2809 = 412^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 172553 - 2⁶ = 172489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86276 + 86277.

It is an arithmetic number, because the mean of its divisors is an integer number (86277).

2¹⁷²⁵⁵³ is an apocalyptic number.

It is an amenable number.

172553 is a deficient number, since it is larger than the sum of its proper divisors (1).

172553 is an equidigital number, since it uses as much as digits as its factorization.

172553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 23.

The square root of 172553 is about 415.3949927479. The cubic root of 172553 is about 55.6725146346.

The spelling of 172553 in words is "one hundred seventy-two thousand, five hundred fifty-three".