73201545 has 12 divisors (see below), whose sum is σ = 126882756. Its totient is φ = 39040800.

The previous prime is 73201543. The next prime is 73201561. The reversal of 73201545 is 54510237.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9903609 + 63297936 = 3147^2 + 7956^2 .

It is not a de Polignac number, because 73201545 - 2¹ = 73201543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73201543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813306 + ... + 813395.

It is an arithmetic number, because the mean of its divisors is an integer number (10573563).

Almost surely, 2^73201545 is an apocalyptic number.

It is an amenable number.

73201545 is a deficient number, since it is larger than the sum of its proper divisors (53681211).

73201545 is a wasteful number, since it uses less digits than its factorization.

73201545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626712 (or 1626709 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 73201545 is about 8555.7901446915. The cubic root of 73201545 is about 418.3181894629.

The spelling of 73201545 in words is "seventy-three million, two hundred one thousand, five hundred forty-five".