260511249 has 4 divisors (see below), whose sum is σ = 347348336. Its totient is φ = 173674164.

The previous prime is 260511227. The next prime is 260511257. The reversal of 260511249 is 942115062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 260511249 - 2⁸ = 260510993 is a prime.

It is a super-2 number, since 2×260511249² = 135732221711080002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260511289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43418539 + ... + 43418544.

It is an arithmetic number, because the mean of its divisors is an integer number (86837084).

Almost surely, 2^260511249 is an apocalyptic number.

It is an amenable number.

260511249 is a deficient number, since it is larger than the sum of its proper divisors (86837087).

260511249 is an equidigital number, since it uses as much as digits as its factorization.

260511249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86837086.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 260511249 is about 16140.3608695717. The cubic root of 260511249 is about 638.6684955932.

The spelling of 260511249 in words is "two hundred sixty million, five hundred eleven thousand, two hundred forty-nine".