26890553 has 2 divisors, whose sum is σ = 26890554. Its totient is φ = 26890552.

The previous prime is 26890541. The next prime is 26890559. The reversal of 26890553 is 35509862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26708224 + 182329 = 5168^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 26890553 - 2⁴ = 26890537 is a prime.

It is a super-3 number, since 3×26890553³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26890559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13445276 + 13445277.

It is an arithmetic number, because the mean of its divisors is an integer number (13445277).

Almost surely, 2^26890553 is an apocalyptic number.

It is an amenable number.

26890553 is a deficient number, since it is larger than the sum of its proper divisors (1).

26890553 is an equidigital number, since it uses as much as digits as its factorization.

26890553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 26890553 is about 5185.6101858894. The cubic root of 26890553 is about 299.5940917835.

The spelling of 26890553 in words is "twenty-six million, eight hundred ninety thousand, five hundred fifty-three".