26172455 has 4 divisors (see below), whose sum is σ = 31406952. Its totient is φ = 20937960.

The previous prime is 26172437. The next prime is 26172457. The reversal of 26172455 is 55427162.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 26172455 - 2⁸ = 26172199 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 (26172457) 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, 2617241 + ... + 2617250.

It is an arithmetic number, because the mean of its divisors is an integer number (7851738).

Almost surely, 2^26172455 is an apocalyptic number.

26172455 is a deficient number, since it is larger than the sum of its proper divisors (5234497).

26172455 is an equidigital number, since it uses as much as digits as its factorization.

26172455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234496.

The product of its digits is 16800, while the sum is 32.

The square root of 26172455 is about 5115.9021687284. The cubic root of 26172455 is about 296.9031604681.

The spelling of 26172455 in words is "twenty-six million, one hundred seventy-two thousand, four hundred fifty-five".