26485621 has 4 divisors (see below), whose sum is σ = 26497152. Its totient is φ = 26474092.

The previous prime is 26485597. The next prime is 26485633. The reversal of 26485621 is 12658462.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12658462 = 2 ⋅6329231.

It is a cyclic number.

It is not a de Polignac number, because 26485621 - 2¹⁹ = 25961333 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 (26485321) 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, 1015 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (6624288).

Almost surely, 2^26485621 is an apocalyptic number.

It is an amenable number.

26485621 is a deficient number, since it is larger than the sum of its proper divisors (11531).

26485621 is an equidigital number, since it uses as much as digits as its factorization.

26485621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11530.

The product of its digits is 23040, while the sum is 34.

The square root of 26485621 is about 5146.4182690489. The cubic root of 26485621 is about 298.0826647836.

The spelling of 26485621 in words is "twenty-six million, four hundred eighty-five thousand, six hundred twenty-one".