745558591 has 2 divisors, whose sum is σ = 745558592. Its totient is φ = 745558590.

The previous prime is 745558571. The next prime is 745558631. The reversal of 745558591 is 195855547.

745558591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (195855547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745558591 - 2¹¹ = 745556543 is a prime.

It is a super-2 number, since 2×745558591² = 1111715225227810562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745558571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372779295 + 372779296.

It is an arithmetic number, because the mean of its divisors is an integer number (372779296).

Almost surely, 2^745558591 is an apocalyptic number.

745558591 is a deficient number, since it is larger than the sum of its proper divisors (1).

745558591 is an equidigital number, since it uses as much as digits as its factorization.

745558591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 49.

The square root of 745558591 is about 27304.9188059588. The cubic root of 745558591 is about 906.7632832239.

The spelling of 745558591 in words is "seven hundred forty-five million, five hundred fifty-eight thousand, five hundred ninety-one".