264533651 has 4 divisors (see below), whose sum is σ = 280094472. Its totient is φ = 248972832.

The previous prime is 264533629. The next prime is 264533657. The reversal of 264533651 is 156335462.

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 264533651 - 2¹⁰ = 264532627 is a prime.

It is a super-2 number, since 2×264533651² = 139956105022779602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264533657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7780385 + ... + 7780418.

It is an arithmetic number, because the mean of its divisors is an integer number (70023618).

Almost surely, 2^264533651 is an apocalyptic number.

264533651 is a deficient number, since it is larger than the sum of its proper divisors (15560821).

264533651 is a wasteful number, since it uses less digits than its factorization.

264533651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560820.

The product of its digits is 64800, while the sum is 35.

The square root of 264533651 is about 16264.4904930957. The cubic root of 264533651 is about 641.9388235363.

The spelling of 264533651 in words is "two hundred sixty-four million, five hundred thirty-three thousand, six hundred fifty-one".