73045001 has 4 divisors (see below), whose sum is σ = 73077012. Its totient is φ = 73012992.

The previous prime is 73044991. The next prime is 73045019. The reversal of 73045001 is 10054037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10054037 = 7 ⋅1436291.

It can be written as a sum of positive squares in 2 ways, for example, as 19404025 + 53640976 = 4405^2 + 7324^2 .

It is a cyclic number.

It is not a de Polignac number, because 73045001 - 2²⁶ = 5936137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73045031) 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, 12296 + ... + 17241.

It is an arithmetic number, because the mean of its divisors is an integer number (18269253).

Almost surely, 2^73045001 is an apocalyptic number.

It is an amenable number.

73045001 is a deficient number, since it is larger than the sum of its proper divisors (32011).

73045001 is a wasteful number, since it uses less digits than its factorization.

73045001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32010.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 73045001 is about 8546.6368239209. The cubic root of 73045001 is about 418.0197807386.

Adding to 73045001 its reverse (10054037), we get a palindrome (83099038).

The spelling of 73045001 in words is "seventy-three million, forty-five thousand, one".