172074797 has 4 divisors (see below), whose sum is σ = 174432060. Its totient is φ = 169717536.

The previous prime is 172074779. The next prime is 172074809. The reversal of 172074797 is 797470271.

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 69538921 + 102535876 = 8339^2 + 10126^2 .

It is a cyclic number.

It is not a de Polignac number, because 172074797 - 2⁶ = 172074733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172074737) 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 3 ways as a sum of consecutive naturals, for example, 1178522 + ... + 1178667.

It is an arithmetic number, because the mean of its divisors is an integer number (43608015).

Almost surely, 2^172074797 is an apocalyptic number.

It is an amenable number.

172074797 is a deficient number, since it is larger than the sum of its proper divisors (2357263).

172074797 is an equidigital number, since it uses as much as digits as its factorization.

172074797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357262.

The product of its (nonzero) digits is 172872, while the sum is 44.

The square root of 172074797 is about 13117.7283475455. The cubic root of 172074797 is about 556.2103789984.

The spelling of 172074797 in words is "one hundred seventy-two million, seventy-four thousand, seven hundred ninety-seven".