73545545 has 8 divisors (see below), whose sum is σ = 88713096. Its totient is φ = 58530816.

The previous prime is 73545541. The next prime is 73545557. The reversal of 73545545 is 54554537.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4804864 + 68740681 = 2192^2 + 8291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73545545 - 2² = 73545541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73545499 and 73545508.

It is not an unprimeable number, because it can be changed into a prime (73545541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37142 + ... + 39071.

It is an arithmetic number, because the mean of its divisors is an integer number (11089137).

Almost surely, 2^73545545 is an apocalyptic number.

It is an amenable number.

73545545 is a deficient number, since it is larger than the sum of its proper divisors (15167551).

73545545 is a wasteful number, since it uses less digits than its factorization.

73545545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76411.

The product of its digits is 210000, while the sum is 38.

The square root of 73545545 is about 8575.8699267188. The cubic root of 73545545 is about 418.9724408141.

The spelling of 73545545 in words is "seventy-three million, five hundred forty-five thousand, five hundred forty-five".