261875027 has 4 divisors (see below), whose sum is σ = 263759160. Its totient is φ = 259990896.

The previous prime is 261874979. The next prime is 261875039. The reversal of 261875027 is 720578162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720578162 = 2 ⋅360289081.

It is a cyclic number.

It is not a de Polignac number, because 261875027 - 2¹⁰ = 261874003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261875227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941858 + ... + 942135.

It is an arithmetic number, because the mean of its divisors is an integer number (65939790).

Almost surely, 2^261875027 is an apocalyptic number.

261875027 is a deficient number, since it is larger than the sum of its proper divisors (1884133).

261875027 is a wasteful number, since it uses less digits than its factorization.

261875027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884132.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 261875027 is about 16182.5531669141. The cubic root of 261875027 is about 639.7810343052.

The spelling of 261875027 in words is "two hundred sixty-one million, eight hundred seventy-five thousand, twenty-seven".