261352341 has 6 divisors (see below), whose sum is σ = 377508950. Its totient is φ = 174234888.

The previous prime is 261352331. The next prime is 261352363. The reversal of 261352341 is 143253162.

261352341 is a `hidden beast` number, since 2 + 613 + 5 + 2 + 3 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 213452100 + 47900241 = 14610^2 + 6921^2 .

It is not a de Polignac number, because 261352341 - 2⁷ = 261352213 is a prime.

It is a super-2 number, since 2×261352341² = 136610092292360562, which contains 22 as substring.

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 (261352331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14519566 + ... + 14519583.

Almost surely, 2^261352341 is an apocalyptic number.

It is an amenable number.

261352341 is a deficient number, since it is larger than the sum of its proper divisors (116156609).

261352341 is a wasteful number, since it uses less digits than its factorization.

261352341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29039155 (or 29039152 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 261352341 is about 16166.3954238414. The cubic root of 261352341 is about 639.3550966305.

The spelling of 261352341 in words is "two hundred sixty-one million, three hundred fifty-two thousand, three hundred forty-one".