172268377 has 4 divisors (see below), whose sum is σ = 175188240. Its totient is φ = 169348516.

The previous prime is 172268357. The next prime is 172268417. The reversal of 172268377 is 773862271.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172268377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172268357) 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, 1459843 + ... + 1459960.

It is an arithmetic number, because the mean of its divisors is an integer number (43797060).

Almost surely, 2^172268377 is an apocalyptic number.

It is an amenable number.

172268377 is a deficient number, since it is larger than the sum of its proper divisors (2919863).

172268377 is an equidigital number, since it uses as much as digits as its factorization.

172268377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919862.

The product of its digits is 197568, while the sum is 43.

The square root of 172268377 is about 13125.1048376765. The cubic root of 172268377 is about 556.4188752578.

The spelling of 172268377 in words is "one hundred seventy-two million, two hundred sixty-eight thousand, three hundred seventy-seven".