26365421 has 2 divisors, whose sum is σ = 26365422. Its totient is φ = 26365420.

The previous prime is 26365403. The next prime is 26365463. The reversal of 26365421 is 12456362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24157225 + 2208196 = 4915^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 26365421 - 2¹⁰ = 26364397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26365021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13182710 + 13182711.

It is an arithmetic number, because the mean of its divisors is an integer number (13182711).

Almost surely, 2^26365421 is an apocalyptic number.

It is an amenable number.

26365421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26365421 is an equidigital number, since it uses as much as digits as its factorization.

26365421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 26365421 is about 5134.7269645036. The cubic root of 26365421 is about 297.6310502358.

The spelling of 26365421 in words is "twenty-six million, three hundred sixty-five thousand, four hundred twenty-one".