264555497 has 4 divisors (see below), whose sum is σ = 265305300. Its totient is φ = 263805696.

The previous prime is 264555491. The next prime is 264555509. The reversal of 264555497 is 794555462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90421081 + 174134416 = 9509^2 + 13196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264555497 is a prime.

It is a super-2 number, since 2×264555497² = 139979221985834018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264555491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374372 + ... + 375077.

It is an arithmetic number, because the mean of its divisors is an integer number (66326325).

Almost surely, 2^264555497 is an apocalyptic number.

It is an amenable number.

264555497 is a deficient number, since it is larger than the sum of its proper divisors (749803).

264555497 is an equidigital number, since it uses as much as digits as its factorization.

264555497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749802.

The product of its digits is 1512000, while the sum is 47.

The square root of 264555497 is about 16265.1620649780. The cubic root of 264555497 is about 641.9564941420.

The spelling of 264555497 in words is "two hundred sixty-four million, five hundred fifty-five thousand, four hundred ninety-seven".