26246921 has 2 divisors, whose sum is σ = 26246922. Its totient is φ = 26246920.

The previous prime is 26246911. The next prime is 26246947. The reversal of 26246921 is 12964262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22934521 + 3312400 = 4789^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 26246921 - 2¹⁴ = 26230537 is a prime.

It is not a weakly prime, because it can be changed into another prime (26246911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13123460 + 13123461.

It is an arithmetic number, because the mean of its divisors is an integer number (13123461).

Almost surely, 2^26246921 is an apocalyptic number.

It is an amenable number.

26246921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26246921 is an equidigital number, since it uses as much as digits as its factorization.

26246921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 26246921 is about 5123.1748945356. The cubic root of 26246921 is about 297.1844772881.

The spelling of 26246921 in words is "twenty-six million, two hundred forty-six thousand, nine hundred twenty-one".