26115013 has 4 divisors (see below), whose sum is σ = 26177760. Its totient is φ = 26052268.

The previous prime is 26114999. The next prime is 26115017. The reversal of 26115013 is 31051162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31051162 = 2 ⋅15525581.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26115013 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 (26115017) 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, 30745 + ... + 31582.

It is an arithmetic number, because the mean of its divisors is an integer number (6544440).

Almost surely, 2^26115013 is an apocalyptic number.

It is an amenable number.

26115013 is a deficient number, since it is larger than the sum of its proper divisors (62747).

26115013 is an equidigital number, since it uses as much as digits as its factorization.

26115013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62746.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 26115013 is about 5110.2850214054. The cubic root of 26115013 is about 296.6857919469.

Adding to 26115013 its reverse (31051162), we get a palindrome (57166175).

The spelling of 26115013 in words is "twenty-six million, one hundred fifteen thousand, thirteen".