172530901 has 8 divisors (see below), whose sum is σ = 175267520. Its totient is φ = 169804512.

The previous prime is 172530899. The next prime is 172530907. The reversal of 172530901 is 109035271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172530901 - 2¹ = 172530899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172530901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172530907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35920 + ... + 40438.

It is an arithmetic number, because the mean of its divisors is an integer number (21908440).

Almost surely, 2^172530901 is an apocalyptic number.

It is an amenable number.

172530901 is a deficient number, since it is larger than the sum of its proper divisors (2736619).

172530901 is an equidigital number, since it uses as much as digits as its factorization.

172530901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 172530901 is about 13135.1018648505. The cubic root of 172530901 is about 556.7013785869.

The spelling of 172530901 in words is "one hundred seventy-two million, five hundred thirty thousand, nine hundred one".