26263921 has 2 divisors, whose sum is σ = 26263922. Its totient is φ = 26263920.

The previous prime is 26263901. The next prime is 26263957. The reversal of 26263921 is 12936262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16900321 + 9363600 = 4111^2 + 3060^2 .

It is a cyclic number.

It is not a de Polignac number, because 26263921 - 2⁵ = 26263889 is a prime.

It is not a weakly prime, because it can be changed into another prime (26263901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13131960 + 13131961.

It is an arithmetic number, because the mean of its divisors is an integer number (13131961).

Almost surely, 2^26263921 is an apocalyptic number.

It is an amenable number.

26263921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26263921 is an equidigital number, since it uses as much as digits as its factorization.

26263921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 26263921 is about 5124.8337534012. The cubic root of 26263921 is about 297.2486250760.

The spelling of 26263921 in words is "twenty-six million, two hundred sixty-three thousand, nine hundred twenty-one".