26121513 has 8 divisors (see below), whose sum is σ = 37994976. Its totient is φ = 15831200.

The previous prime is 26121493. The next prime is 26121533. The reversal of 26121513 is 31512162.

It is an interprime number because it is at equal distance from previous prime (26121493) and next prime (26121533).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26121513 - 2¹⁰ = 26120489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26121513.

It is not an unprimeable number, because it can be changed into a prime (26121533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395748 + ... + 395813.

It is an arithmetic number, because the mean of its divisors is an integer number (4749372).

Almost surely, 2^26121513 is an apocalyptic number.

It is an amenable number.

26121513 is a deficient number, since it is larger than the sum of its proper divisors (11873463).

26121513 is a wasteful number, since it uses less digits than its factorization.

26121513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791575.

The product of its digits is 360, while the sum is 21.

The square root of 26121513 is about 5110.9209541921. The cubic root of 26121513 is about 296.7104048349.

Adding to 26121513 its reverse (31512162), we get a palindrome (57633675).

The spelling of 26121513 in words is "twenty-six million, one hundred twenty-one thousand, five hundred thirteen".