26513957 has 2 divisors, whose sum is σ = 26513958. Its totient is φ = 26513956.

The previous prime is 26513947. The next prime is 26513983. The reversal of 26513957 is 75931562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23804641 + 2709316 = 4879^2 + 1646^2 .

It is a cyclic number.

It is not a de Polignac number, because 26513957 - 2⁸ = 26513701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26513957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26513947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13256978 + 13256979.

It is an arithmetic number, because the mean of its divisors is an integer number (13256979).

Almost surely, 2^26513957 is an apocalyptic number.

It is an amenable number.

26513957 is a deficient number, since it is larger than the sum of its proper divisors (1).

26513957 is an equidigital number, since it uses as much as digits as its factorization.

26513957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 38.

The square root of 26513957 is about 5149.1705157239. The cubic root of 26513957 is about 298.1889294871.

The spelling of 26513957 in words is "twenty-six million, five hundred thirteen thousand, nine hundred fifty-seven".