264289537 has 2 divisors, whose sum is σ = 264289538. Its totient is φ = 264289536.

The previous prime is 264289469. The next prime is 264289547. The reversal of 264289537 is 735982462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167935681 + 96353856 = 12959^2 + 9816^2 .

It is a cyclic number.

It is not a de Polignac number, because 264289537 - 2²³ = 255900929 is a prime.

It is not a weakly prime, because it can be changed into another prime (264289547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132144768 + 132144769.

It is an arithmetic number, because the mean of its divisors is an integer number (132144769).

Almost surely, 2^264289537 is an apocalyptic number.

It is an amenable number.

264289537 is a deficient number, since it is larger than the sum of its proper divisors (1).

264289537 is an equidigital number, since it uses as much as digits as its factorization.

264289537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The square root of 264289537 is about 16256.9842529296. The cubic root of 264289537 is about 641.7413004847.

The spelling of 264289537 in words is "two hundred sixty-four million, two hundred eighty-nine thousand, five hundred thirty-seven".