275402261 has 12 divisors (see below), whose sum is σ = 293541120. Its totient is φ = 258329280.

The previous prime is 275402219. The next prime is 275402273. The reversal of 275402261 is 162204572.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-275402261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275402201) 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, 94220 + ... + 97098.

It is an arithmetic number, because the mean of its divisors is an integer number (24461760).

Almost surely, 2^275402261 is an apocalyptic number.

It is an amenable number.

275402261 is a deficient number, since it is larger than the sum of its proper divisors (18138859).

275402261 is a wasteful number, since it uses less digits than its factorization.

275402261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244 (or 3227 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 275402261 is about 16595.2481451770. The cubic root of 275402261 is about 650.6126460485.

The spelling of 275402261 in words is "two hundred seventy-five million, four hundred two thousand, two hundred sixty-one".