260435551 has 4 divisors (see below), whose sum is σ = 261785152. Its totient is φ = 259085952.

The previous prime is 260435533. The next prime is 260435579. The reversal of 260435551 is 155534062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260435551 - 2⁷ = 260435423 is a prime.

It is a super-3 number, since 3×260435551³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260435501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674511 + ... + 674896.

It is an arithmetic number, because the mean of its divisors is an integer number (65446288).

Almost surely, 2^260435551 is an apocalyptic number.

260435551 is a deficient number, since it is larger than the sum of its proper divisors (1349601).

260435551 is a wasteful number, since it uses less digits than its factorization.

260435551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349600.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 260435551 is about 16138.0157082586. The cubic root of 260435551 is about 638.6066292805.

The spelling of 260435551 in words is "two hundred sixty million, four hundred thirty-five thousand, five hundred fifty-one".