73545589 has 6 divisors (see below), whose sum is σ = 79638306. Its totient is φ = 67888080.

The previous prime is 73545581. The next prime is 73545601. The reversal of 73545589 is 98554537.

It can be written as a sum of positive squares in 3 ways, for example, as 8614225 + 64931364 = 2935^2 + 8058^2 .

It is not a de Polignac number, because 73545589 - 2³ = 73545581 is a prime.

It is a super-2 number, since 2×73545589² = 10817907322713842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73545581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217422 + ... + 217759.

It is an arithmetic number, because the mean of its divisors is an integer number (13273051).

Almost surely, 2^73545589 is an apocalyptic number.

It is an amenable number.

73545589 is a deficient number, since it is larger than the sum of its proper divisors (6092717).

73545589 is a wasteful number, since it uses less digits than its factorization.

73545589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435207 (or 435194 counting only the distinct ones).

The product of its digits is 756000, while the sum is 46.

The square root of 73545589 is about 8575.8724920558. The cubic root of 73545589 is about 418.9725243668.

The spelling of 73545589 in words is "seventy-three million, five hundred forty-five thousand, five hundred eighty-nine".