261053269 has 2 divisors, whose sum is σ = 261053270. Its totient is φ = 261053268.

The previous prime is 261053257. The next prime is 261053281. The reversal of 261053269 is 962350162.

It is a balanced prime because it is at equal distance from previous prime (261053257) and next prime (261053281).

It can be written as a sum of positive squares in only one way, i.e., 184280625 + 76772644 = 13575^2 + 8762^2 .

It is a cyclic number.

It is not a de Polignac number, because 261053269 - 2⁵ = 261053237 is a prime.

It is a super-2 number, since 2×261053269² = 136297618511172722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261053069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130526634 + 130526635.

It is an arithmetic number, because the mean of its divisors is an integer number (130526635).

Almost surely, 2^261053269 is an apocalyptic number.

It is an amenable number.

261053269 is a deficient number, since it is larger than the sum of its proper divisors (1).

261053269 is an equidigital number, since it uses as much as digits as its factorization.

261053269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 261053269 is about 16157.1429714538. The cubic root of 261053269 is about 639.1111268873. Note that the first 4 decimals are identical.

The spelling of 261053269 in words is "two hundred sixty-one million, fifty-three thousand, two hundred sixty-nine".