26131087 has 4 divisors (see below), whose sum is σ = 26155480. Its totient is φ = 26106696.

The previous prime is 26131081. The next prime is 26131093. The reversal of 26131087 is 78013162.

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

It is an interprime number because it is at equal distance from previous prime (26131081) and next prime (26131093).

It is a cyclic number.

It is not a de Polignac number, because 26131087 - 2¹⁹ = 25606799 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 (26131081) 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, 10512 + ... + 12757.

It is an arithmetic number, because the mean of its divisors is an integer number (6538870).

Almost surely, 2^26131087 is an apocalyptic number.

26131087 is a deficient number, since it is larger than the sum of its proper divisors (24393).

26131087 is a wasteful number, since it uses less digits than its factorization.

26131087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24392.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 26131087 is about 5111.8574901889. The cubic root of 26131087 is about 296.7466502907.

The spelling of 26131087 in words is "twenty-six million, one hundred thirty-one thousand, eighty-seven".