260656551 has 12 divisors (see below), whose sum is σ = 376656280. Its totient is φ = 173700720.

The previous prime is 260656541. The next prime is 260656559. The reversal of 260656551 is 155656062.

It is a happy number.

It is not a de Polignac number, because 260656551 - 2⁵ = 260656519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260656559) 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, 27780 + ... + 35958.

Almost surely, 2^260656551 is an apocalyptic number.

260656551 is a deficient number, since it is larger than the sum of its proper divisors (115999729).

260656551 is a wasteful number, since it uses less digits than its factorization.

260656551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11726 (or 11723 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 260656551 is about 16144.8614425767. The cubic root of 260656551 is about 638.7872141543.

The spelling of 260656551 in words is "two hundred sixty million, six hundred fifty-six thousand, five hundred fifty-one".