26552621 has 2 divisors, whose sum is σ = 26552622. Its totient is φ = 26552620.

The previous prime is 26552609. The next prime is 26552639. The reversal of 26552621 is 12625562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17522596 + 9030025 = 4186^2 + 3005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26552621 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26552641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13276310 + 13276311.

It is an arithmetic number, because the mean of its divisors is an integer number (13276311).

Almost surely, 2^26552621 is an apocalyptic number.

It is an amenable number.

26552621 is a deficient number, since it is larger than the sum of its proper divisors (1).

26552621 is an equidigital number, since it uses as much as digits as its factorization.

26552621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 26552621 is about 5152.9235391184. The cubic root of 26552621 is about 298.3338038409. Note that the first 3 decimals are identical.

The spelling of 26552621 in words is "twenty-six million, five hundred fifty-two thousand, six hundred twenty-one".