269097561 has 6 divisors (see below), whose sum is σ = 388696490. Its totient is φ = 179398368.

The previous prime is 269097487. The next prime is 269097581. The reversal of 269097561 is 165790962.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 135001161 + 134096400 = 11619^2 + 11580^2 .

It is not a de Polignac number, because 269097561 - 2²² = 264903257 is a prime.

It is a super-2 number, since 2×269097561² = 144826994672297442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (269097581) 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, 14949856 + ... + 14949873.

Almost surely, 2^269097561 is an apocalyptic number.

It is an amenable number.

269097561 is a deficient number, since it is larger than the sum of its proper divisors (119598929).

269097561 is a wasteful number, since it uses less digits than its factorization.

269097561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29899735 (or 29899732 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 269097561 is about 16404.1933968117. The cubic root of 269097561 is about 645.6095121777.

The spelling of 269097561 in words is "two hundred sixty-nine million, ninety-seven thousand, five hundred sixty-one".