172497605 has 8 divisors (see below), whose sum is σ = 236568192. Its totient is φ = 118284048.

The previous prime is 172497601. The next prime is 172497607. The reversal of 172497605 is 506794271.

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 172497605 - 2² = 172497601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172497601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2464217 + ... + 2464286.

It is an arithmetic number, because the mean of its divisors is an integer number (29571024).

Almost surely, 2^172497605 is an apocalyptic number.

It is an amenable number.

172497605 is a deficient number, since it is larger than the sum of its proper divisors (64070587).

172497605 is an equidigital number, since it uses as much as digits as its factorization.

172497605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928515.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 172497605 is about 13133.8343601555. The cubic root of 172497605 is about 556.6655644776.

The spelling of 172497605 in words is "one hundred seventy-two million, four hundred ninety-seven thousand, six hundred five".