26645057 has 2 divisors, whose sum is σ = 26645058. Its totient is φ = 26645056.

The previous prime is 26645053. The next prime is 26645071. The reversal of 26645057 is 75054662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26204161 + 440896 = 5119^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 26645057 - 2² = 26645053 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26645051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13322528 + 13322529.

It is an arithmetic number, because the mean of its divisors is an integer number (13322529).

Almost surely, 2^26645057 is an apocalyptic number.

It is an amenable number.

26645057 is a deficient number, since it is larger than the sum of its proper divisors (1).

26645057 is an equidigital number, since it uses as much as digits as its factorization.

26645057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 26645057 is about 5161.8850239036. The cubic root of 26645057 is about 298.6795932426.

The spelling of 26645057 in words is "twenty-six million, six hundred forty-five thousand, fifty-seven".