264553261 has 8 divisors (see below), whose sum is σ = 302445504. Its totient is φ = 226685760.

The previous prime is 264553249. The next prime is 264553273. The reversal of 264553261 is 162355462.

It is an interprime number because it is at equal distance from previous prime (264553249) and next prime (264553273).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264553261 - 2¹⁷ = 264422189 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 (264553231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35301 + ... + 42133.

It is an arithmetic number, because the mean of its divisors is an integer number (37805688).

Almost surely, 2^264553261 is an apocalyptic number.

It is an amenable number.

264553261 is a deficient number, since it is larger than the sum of its proper divisors (37892243).

264553261 is an equidigital number, since it uses as much as digits as its factorization.

264553261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12371.

The product of its digits is 43200, while the sum is 34.

The square root of 264553261 is about 16265.0933289668. The cubic root of 264553261 is about 641.9546855501.

The spelling of 264553261 in words is "two hundred sixty-four million, five hundred fifty-three thousand, two hundred sixty-one".