26131199 has 2 divisors, whose sum is σ = 26131200. Its totient is φ = 26131198.

The previous prime is 26131187. The next prime is 26131207. The reversal of 26131199 is 99113162.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26131199 is a prime.

It is a super-2 number, since 2×26131199² = 1365679122355202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26131129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13065599 + 13065600.

It is an arithmetic number, because the mean of its divisors is an integer number (13065600).

Almost surely, 2^26131199 is an apocalyptic number.

26131199 is a deficient number, since it is larger than the sum of its proper divisors (1).

26131199 is an equidigital number, since it uses as much as digits as its factorization.

26131199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 32.

The square root of 26131199 is about 5111.8684450991. The cubic root of 26131199 is about 296.7470742503.

The spelling of 26131199 in words is "twenty-six million, one hundred thirty-one thousand, one hundred ninety-nine".