26321651 has 2 divisors, whose sum is σ = 26321652. Its totient is φ = 26321650.

The previous prime is 26321623. The next prime is 26321653. The reversal of 26321651 is 15612362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26321651 - 2⁶ = 26321587 is a prime.

It is a super-2 number, since 2×26321651² = 1385658622731602, which contains 22 as substring.

Together with 26321653, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26321651.

It is not a weakly prime, because it can be changed into another prime (26321653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13160825 + 13160826.

It is an arithmetic number, because the mean of its divisors is an integer number (13160826).

Almost surely, 2^26321651 is an apocalyptic number.

26321651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26321651 is an equidigital number, since it uses as much as digits as its factorization.

26321651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 26321651 is about 5130.4630395316. The cubic root of 26321651 is about 297.4662570302.

The spelling of 26321651 in words is "twenty-six million, three hundred twenty-one thousand, six hundred fifty-one".