26131157 has 4 divisors (see below), whose sum is σ = 28141260. Its totient is φ = 24121056.

The previous prime is 26131141. The next prime is 26131163. The reversal of 26131157 is 75113162.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3530641 + 22600516 = 1879^2 + 4754^2 .

It is a cyclic number.

It is not a de Polignac number, because 26131157 - 2⁴ = 26131141 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 (26131187) 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, 1005032 + ... + 1005057.

It is an arithmetic number, because the mean of its divisors is an integer number (7035315).

Almost surely, 2^26131157 is an apocalyptic number.

It is an amenable number.

26131157 is a deficient number, since it is larger than the sum of its proper divisors (2010103).

26131157 is a wasteful number, since it uses less digits than its factorization.

26131157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010102.

The product of its digits is 1260, while the sum is 26.

The square root of 26131157 is about 5111.8643370105. The cubic root of 26131157 is about 296.7469152656.

The spelling of 26131157 in words is "twenty-six million, one hundred thirty-one thousand, one hundred fifty-seven".