26178461 has 2 divisors, whose sum is σ = 26178462. Its totient is φ = 26178460.

The previous prime is 26178413. The next prime is 26178463. The reversal of 26178461 is 16487162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16605625 + 9572836 = 4075^2 + 3094^2 .

It is a cyclic number.

It is not a de Polignac number, because 26178461 - 2¹⁴ = 26162077 is a prime.

Together with 26178463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26178463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13089230 + 13089231.

It is an arithmetic number, because the mean of its divisors is an integer number (13089231).

Almost surely, 2^26178461 is an apocalyptic number.

It is an amenable number.

26178461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26178461 is an equidigital number, since it uses as much as digits as its factorization.

26178461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 26178461 is about 5116.4891282988. The cubic root of 26178461 is about 296.9258696357.

The spelling of 26178461 in words is "twenty-six million, one hundred seventy-eight thousand, four hundred sixty-one".