261410269 has 2 divisors, whose sum is σ = 261410270. Its totient is φ = 261410268.

The previous prime is 261410209. The next prime is 261410293. The reversal of 261410269 is 962014162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258727225 + 2683044 = 16085^2 + 1638^2 .

It is a cyclic number.

It is not a de Polignac number, because 261410269 - 2¹¹ = 261408221 is a prime.

It is a super-2 number, since 2×261410269² = 136670657477304722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261410269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261410209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130705134 + 130705135.

It is an arithmetic number, because the mean of its divisors is an integer number (130705135).

Almost surely, 2^261410269 is an apocalyptic number.

It is an amenable number.

261410269 is a deficient number, since it is larger than the sum of its proper divisors (1).

261410269 is an equidigital number, since it uses as much as digits as its factorization.

261410269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 261410269 is about 16168.1869422641. The cubic root of 261410269 is about 639.4023302180.

The spelling of 261410269 in words is "two hundred sixty-one million, four hundred ten thousand, two hundred sixty-nine".