172764097 has 4 divisors (see below), whose sum is σ = 188469936. Its totient is φ = 157058260.

The previous prime is 172764091. The next prime is 172764101. The reversal of 172764097 is 790467271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 790467271 = 11 ⋅71860661.

It is a cyclic number.

It is not a de Polignac number, because 172764097 - 2³ = 172764089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172764091) 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, 7852903 + ... + 7852924.

It is an arithmetic number, because the mean of its divisors is an integer number (47117484).

Almost surely, 2^172764097 is an apocalyptic number.

It is an amenable number.

172764097 is a deficient number, since it is larger than the sum of its proper divisors (15705839).

172764097 is a wasteful number, since it uses less digits than its factorization.

172764097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15705838.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 172764097 is about 13143.9756923086. The cubic root of 172764097 is about 556.9520816755.

The spelling of 172764097 in words is "one hundred seventy-two million, seven hundred sixty-four thousand, ninety-seven".