26137129 has 2 divisors, whose sum is σ = 26137130. Its totient is φ = 26137128.

The previous prime is 26137127. The next prime is 26137151. The reversal of 26137129 is 92173162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16974400 + 9162729 = 4120^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 26137129 - 2¹ = 26137127 is a prime.

Together with 26137127, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26137129.

It is not a weakly prime, because it can be changed into another prime (26137127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13068564 + 13068565.

It is an arithmetic number, because the mean of its divisors is an integer number (13068565).

Almost surely, 2^26137129 is an apocalyptic number.

It is an amenable number.

26137129 is a deficient number, since it is larger than the sum of its proper divisors (1).

26137129 is an equidigital number, since it uses as much as digits as its factorization.

26137129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 26137129 is about 5112.4484349478. The cubic root of 26137129 is about 296.7695196683.

The spelling of 26137129 in words is "twenty-six million, one hundred thirty-seven thousand, one hundred twenty-nine".