264527257 has 8 divisors (see below), whose sum is σ = 265903560. Its totient is φ = 263155200.

The previous prime is 264527251. The next prime is 264527287. The reversal of 264527257 is 752725462.

It can be written as a sum of positive squares in 4 ways, for example, as 68079001 + 196448256 = 8251^2 + 14016^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 264527257 - 2⁷ = 264527129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264527251) 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, 246919 + ... + 247987.

It is an arithmetic number, because the mean of its divisors is an integer number (33237945).

Almost surely, 2^264527257 is an apocalyptic number.

It is an amenable number.

264527257 is a deficient number, since it is larger than the sum of its proper divisors (1376303).

264527257 is a wasteful number, since it uses less digits than its factorization.

264527257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123.

The product of its digits is 235200, while the sum is 40.

The square root of 264527257 is about 16264.2939287262. The cubic root of 264527257 is about 641.9336514282.

The spelling of 264527257 in words is "two hundred sixty-four million, five hundred twenty-seven thousand, two hundred fifty-seven".