26221651 has 8 divisors (see below), whose sum is σ = 26512304. Its totient is φ = 25932960.

The previous prime is 26221639. The next prime is 26221661. The reversal of 26221651 is 15612262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26221651 - 2¹¹ = 26219603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26221631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49876 + ... + 50398.

It is an arithmetic number, because the mean of its divisors is an integer number (3314038).

Almost surely, 2^26221651 is an apocalyptic number.

26221651 is a deficient number, since it is larger than the sum of its proper divisors (290653).

26221651 is a wasteful number, since it uses less digits than its factorization.

26221651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

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

The square root of 26221651 is about 5120.7080565094. The cubic root of 26221651 is about 297.0890722799.

The spelling of 26221651 in words is "twenty-six million, two hundred twenty-one thousand, six hundred fifty-one".