172752489 has 36 divisors (see below), whose sum is σ = 312610116. Its totient is φ = 91119168.

The previous prime is 172752469. The next prime is 172752499. The reversal of 172752489 is 984257271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38378025 + 134374464 = 6195^2 + 11592^2 .

It is not a de Polignac number, because 172752489 - 2⁷ = 172752361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172752469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9334 + ... + 20799.

Almost surely, 2^172752489 is an apocalyptic number.

It is an amenable number.

172752489 is a deficient number, since it is larger than the sum of its proper divisors (139857627).

172752489 is a wasteful number, since it uses less digits than its factorization.

172752489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30166 (or 30156 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 172752489 is about 13143.5341137762. The cubic root of 172752489 is about 556.9396075471.

The spelling of 172752489 in words is "one hundred seventy-two million, seven hundred fifty-two thousand, four hundred eighty-nine".