26315321 has 4 divisors (see below), whose sum is σ = 26408592. Its totient is φ = 26222052.

The previous prime is 26315309. The next prime is 26315329. The reversal of 26315321 is 12351362.

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: 12351362 = 2 ⋅6175681.

It is a cyclic number.

It is not a de Polignac number, because 26315321 - 2⁶ = 26315257 is a prime.

It is a super-2 number, since 2×26315321² = 1384992238666082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26315329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46211 + ... + 46776.

It is an arithmetic number, because the mean of its divisors is an integer number (6602148).

Almost surely, 2^26315321 is an apocalyptic number.

It is an amenable number.

26315321 is a deficient number, since it is larger than the sum of its proper divisors (93271).

26315321 is an equidigital number, since it uses as much as digits as its factorization.

26315321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93270.

The product of its digits is 1080, while the sum is 23.

The square root of 26315321 is about 5129.8460990560. The cubic root of 26315321 is about 297.4424095853.

Adding to 26315321 its reverse (12351362), we get a palindrome (38666683).

The spelling of 26315321 in words is "twenty-six million, three hundred fifteen thousand, three hundred twenty-one".