264556 has 18 divisors (see below), whose sum is σ = 495740. Its totient is φ = 123192.

The previous prime is 264553. The next prime is 264559. The reversal of 264556 is 655462.

It is an interprime number because it is at equal distance from previous prime (264553) and next prime (264559).

Its product of digits (7200) is a multiple of the sum of its prime divisors (80).

It is not an unprimeable number, because it can be changed into a prime (264553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4455 + ... + 4513.

2²⁶⁴⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

264556 is a deficient number, since it is larger than the sum of its proper divisors (231184).

264556 is a wasteful number, since it uses less digits than its factorization.

264556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 80 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 264556 is about 514.3500753378. The cubic root of 264556 is about 64.1956900993.

It can be divided in two parts, 2645 and 56, that added together give a triangular number (2701 = T₇₃).

The spelling of 264556 in words is "two hundred sixty-four thousand, five hundred fifty-six".