26491953 has 4 divisors (see below), whose sum is σ = 35322608. Its totient is φ = 17661300.

The previous prime is 26491943. The next prime is 26491957. The reversal of 26491953 is 35919462.

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 not a de Polignac number, because 26491953 - 2⁵ = 26491921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26491957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4415323 + ... + 4415328.

It is an arithmetic number, because the mean of its divisors is an integer number (8830652).

Almost surely, 2^26491953 is an apocalyptic number.

It is an amenable number.

26491953 is a deficient number, since it is larger than the sum of its proper divisors (8830655).

26491953 is an equidigital number, since it uses as much as digits as its factorization.

26491953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830654.

The product of its digits is 58320, while the sum is 39.

The square root of 26491953 is about 5147.0334174163. The cubic root of 26491953 is about 298.1064174082.

The spelling of 26491953 in words is "twenty-six million, four hundred ninety-one thousand, nine hundred fifty-three".