745559 has 4 divisors (see below), whose sum is σ = 749616. Its totient is φ = 741504.

The previous prime is 745543. The next prime is 745567. The reversal of 745559 is 955547.

745559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955547 = 97 ⋅9851.

It is a cyclic number.

It is not a de Polignac number, because 745559 - 2⁴ = 745543 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1739 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (187404).

2⁷⁴⁵⁵⁵⁹ is an apocalyptic number.

745559 is a deficient number, since it is larger than the sum of its proper divisors (4057).

745559 is a wasteful number, since it uses less digits than its factorization.

745559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its digits is 31500, while the sum is 35.

The square root of 745559 is about 863.4575843665. The cubic root of 745559 is about 90.6763449035.

The spelling of 745559 in words is "seven hundred forty-five thousand, five hundred fifty-nine".