745505269 has 2 divisors, whose sum is σ = 745505270. Its totient is φ = 745505268.

The previous prime is 745505249. The next prime is 745505281. The reversal of 745505269 is 962505547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 740384100 + 5121169 = 27210^2 + 2263^2 .

It is an emirp because it is prime and its reverse (962505547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745505269 - 2¹⁵ = 745472501 is a prime.

It is a super-2 number, since 2×745505269² = 1111556212213524722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745505209) 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, 372752634 + 372752635.

It is an arithmetic number, because the mean of its divisors is an integer number (372752635).

Almost surely, 2^745505269 is an apocalyptic number.

It is an amenable number.

745505269 is a deficient number, since it is larger than the sum of its proper divisors (1).

745505269 is an equidigital number, since it uses as much as digits as its factorization.

745505269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 745505269 is about 27303.9423710203. The cubic root of 745505269 is about 906.7416656139.

The spelling of 745505269 in words is "seven hundred forty-five million, five hundred five thousand, two hundred sixty-nine".