26540261 has 12 divisors (see below), whose sum is σ = 29297772. Its totient is φ = 24024000.

The previous prime is 26540257. The next prime is 26540263. The reversal of 26540261 is 16204562.

It can be written as a sum of positive squares in 2 ways, for example, as 2579236 + 23961025 = 1606^2 + 4895^2 .

It is not a de Polignac number, because 26540261 - 2² = 26540257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26540261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50681 + ... + 51201.

It is an arithmetic number, because the mean of its divisors is an integer number (2441481).

Almost surely, 2^26540261 is an apocalyptic number.

It is an amenable number.

26540261 is a deficient number, since it is larger than the sum of its proper divisors (2757511).

26540261 is a wasteful number, since it uses less digits than its factorization.

26540261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 26540261 is about 5151.7240803444. The cubic root of 26540261 is about 298.2875061124.

The spelling of 26540261 in words is "twenty-six million, five hundred forty thousand, two hundred sixty-one".