264040531 has 2 divisors, whose sum is σ = 264040532. Its totient is φ = 264040530.

The previous prime is 264040519. The next prime is 264040537. The reversal of 264040531 is 135040462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264040531 - 2¹⁵ = 264007763 is a prime.

It is a super-2 number, since 2×264040531² = 139434804021523922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 264040496 and 264040505.

It is not a weakly prime, because it can be changed into another prime (264040537) 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 as a sum of consecutive naturals, namely, 132020265 + 132020266.

It is an arithmetic number, because the mean of its divisors is an integer number (132020266).

Almost surely, 2^264040531 is an apocalyptic number.

264040531 is a deficient number, since it is larger than the sum of its proper divisors (1).

264040531 is an equidigital number, since it uses as much as digits as its factorization.

264040531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 264040531 is about 16249.3240167091. The cubic root of 264040531 is about 641.5396937571.

Adding to 264040531 its reverse (135040462), we get a palindrome (399080993).

The spelling of 264040531 in words is "two hundred sixty-four million, forty thousand, five hundred thirty-one".