172775401 has 4 divisors (see below), whose sum is σ = 173176704. Its totient is φ = 172374100.

The previous prime is 172775381. The next prime is 172775411. The reversal of 172775401 is 104577271.

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 not a de Polignac number, because 172775401 - 2¹¹ = 172773353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172775411) 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, 200005 + ... + 200866.

It is an arithmetic number, because the mean of its divisors is an integer number (43294176).

Almost surely, 2^172775401 is an apocalyptic number.

It is an amenable number.

172775401 is a deficient number, since it is larger than the sum of its proper divisors (401303).

172775401 is an equidigital number, since it uses as much as digits as its factorization.

172775401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401302.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 172775401 is about 13144.4056921566. The cubic root of 172775401 is about 556.9642285840.

The spelling of 172775401 in words is "one hundred seventy-two million, seven hundred seventy-five thousand, four hundred one".