26455021 has 2 divisors, whose sum is σ = 26455022. Its totient is φ = 26455020.

The previous prime is 26455007. The next prime is 26455061. The reversal of 26455021 is 12055462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17388900 + 9066121 = 4170^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 26455021 - 2⁷ = 26454893 is a prime.

It is a super-2 number, since 2×26455021² = 1399736272220882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26455061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13227510 + 13227511.

It is an arithmetic number, because the mean of its divisors is an integer number (13227511).

Almost surely, 2^26455021 is an apocalyptic number.

It is an amenable number.

26455021 is a deficient number, since it is larger than the sum of its proper divisors (1).

26455021 is an equidigital number, since it uses as much as digits as its factorization.

26455021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 26455021 is about 5143.4444684472. Note that the first 4 decimals coincide. The cubic root of 26455021 is about 297.9678245519.

The spelling of 26455021 in words is "twenty-six million, four hundred fifty-five thousand, twenty-one".