172512023 has 2 divisors, whose sum is σ = 172512024. Its totient is φ = 172512022.

The previous prime is 172511959. The next prime is 172512031. The reversal of 172512023 is 320215271.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (320215271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172512023 - 2⁶ = 172511959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172512023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172512323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86256011 + 86256012.

It is an arithmetic number, because the mean of its divisors is an integer number (86256012).

Almost surely, 2^172512023 is an apocalyptic number.

172512023 is a deficient number, since it is larger than the sum of its proper divisors (1).

172512023 is an equidigital number, since it uses as much as digits as its factorization.

172512023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 172512023 is about 13134.3832363762. The cubic root of 172512023 is about 556.6810734476.

Adding to 172512023 its reverse (320215271), we get a palindrome (492727294).

The spelling of 172512023 in words is "one hundred seventy-two million, five hundred twelve thousand, twenty-three".