172952489 has 4 divisors (see below), whose sum is σ = 174483156. Its totient is φ = 171421824.

The previous prime is 172952449. The next prime is 172952551. The reversal of 172952489 is 984259271.

172952489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60762025 + 112190464 = 7795^2 + 10592^2 .

It is a cyclic number.

It is not a de Polignac number, because 172952489 - 2⁸ = 172952233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172952419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765164 + ... + 765389.

It is an arithmetic number, because the mean of its divisors is an integer number (43620789).

Almost surely, 2^172952489 is an apocalyptic number.

It is an amenable number.

172952489 is a deficient number, since it is larger than the sum of its proper divisors (1530667).

172952489 is a wasteful number, since it uses less digits than its factorization.

172952489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530666.

The product of its digits is 362880, while the sum is 47.

The square root of 172952489 is about 13151.1402167265. The cubic root of 172952489 is about 557.1544524277.

The spelling of 172952489 in words is "one hundred seventy-two million, nine hundred fifty-two thousand, four hundred eighty-nine".