172513453 has 16 divisors (see below), whose sum is σ = 202535424. Its totient is φ = 143873280.

The previous prime is 172513447. The next prime is 172513459. The reversal of 172513453 is 354315271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (172513447) and next prime (172513459).

It is not a de Polignac number, because 172513453 - 2⁵ = 172513421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172513459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58101 + ... + 60997.

It is an arithmetic number, because the mean of its divisors is an integer number (12658464).

Almost surely, 2^172513453 is an apocalyptic number.

It is an amenable number.

172513453 is a deficient number, since it is larger than the sum of its proper divisors (30021971).

172513453 is a wasteful number, since it uses less digits than its factorization.

172513453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3132.

The product of its digits is 12600, while the sum is 31.

The square root of 172513453 is about 13134.4376735359. The cubic root of 172513453 is about 556.6826116046.

The spelling of 172513453 in words is "one hundred seventy-two million, five hundred thirteen thousand, four hundred fifty-three".