26401651 has 2 divisors, whose sum is σ = 26401652. Its totient is φ = 26401650.

The previous prime is 26401643. The next prime is 26401667. The reversal of 26401651 is 15610462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26401651 - 2³ = 26401643 is a prime.

It is not a weakly prime, because it can be changed into another prime (26401601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13200825 + 13200826.

It is an arithmetic number, because the mean of its divisors is an integer number (13200826).

Almost surely, 2^26401651 is an apocalyptic number.

26401651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26401651 is an equidigital number, since it uses as much as digits as its factorization.

26401651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 26401651 is about 5138.2536916739. The cubic root of 26401651 is about 297.7673175775.

The spelling of 26401651 in words is "twenty-six million, four hundred one thousand, six hundred fifty-one".