26488921 has 2 divisors, whose sum is σ = 26488922. Its totient is φ = 26488920.

The previous prime is 26488879. The next prime is 26488927. The reversal of 26488921 is 12988462.

26488921 is nontrivially palindromic in base 4.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 3111696 = 4835^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 26488921 - 2⁹ = 26488409 is a prime.

It is not a weakly prime, because it can be changed into another prime (26488927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13244460 + 13244461.

It is an arithmetic number, because the mean of its divisors is an integer number (13244461).

Almost surely, 2^26488921 is an apocalyptic number.

It is an amenable number.

26488921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26488921 is an equidigital number, since it uses as much as digits as its factorization.

26488921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 26488921 is about 5146.7388703916. The cubic root of 26488921 is about 298.0950442295.

The spelling of 26488921 in words is "twenty-six million, four hundred eighty-eight thousand, nine hundred twenty-one".