73284545 has 4 divisors (see below), whose sum is σ = 87941460. Its totient is φ = 58627632.

The previous prime is 73284529. The next prime is 73284551. The reversal of 73284545 is 54548237.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14409616 + 58874929 = 3796^2 + 7673^2 .

It is a cyclic number.

It is not a de Polignac number, because 73284545 - 2⁴ = 73284529 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 73284499 and 73284508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7328450 + ... + 7328459.

It is an arithmetic number, because the mean of its divisors is an integer number (21985365).

Almost surely, 2^73284545 is an apocalyptic number.

It is an amenable number.

73284545 is a deficient number, since it is larger than the sum of its proper divisors (14656915).

73284545 is a wasteful number, since it uses less digits than its factorization.

73284545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14656914.

The product of its digits is 134400, while the sum is 38.

The square root of 73284545 is about 8560.6392868757. The cubic root of 73284545 is about 418.4762339201.

The spelling of 73284545 in words is "seventy-three million, two hundred eighty-four thousand, five hundred forty-five".