26531465 has 4 divisors (see below), whose sum is σ = 31837764. Its totient is φ = 21225168.

The previous prime is 26531459. The next prime is 26531471. The reversal of 26531465 is 56413562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56413562 = 2 ⋅28206781.

It is an interprime number because it is at equal distance from previous prime (26531459) and next prime (26531471).

It can be written as a sum of positive squares in 2 ways, for example, as 7382089 + 19149376 = 2717^2 + 4376^2 .

It is a cyclic number.

It is not a de Polignac number, because 26531465 - 2²⁰ = 25482889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2653142 + ... + 2653151.

It is an arithmetic number, because the mean of its divisors is an integer number (7959441).

Almost surely, 2^26531465 is an apocalyptic number.

It is an amenable number.

26531465 is a deficient number, since it is larger than the sum of its proper divisors (5306299).

26531465 is an equidigital number, since it uses as much as digits as its factorization.

26531465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306298.

The product of its digits is 21600, while the sum is 32.

The square root of 26531465 is about 5150.8703148109. The cubic root of 26531465 is about 298.2545495561.

The spelling of 26531465 in words is "twenty-six million, five hundred thirty-one thousand, four hundred sixty-five".