73515945 has 8 divisors (see below), whose sum is σ = 117625536. Its totient is φ = 39208496.

The previous prime is 73515907. The next prime is 73515961. The reversal of 73515945 is 54951537.

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 73515945 - 2¹² = 73511849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2450517 + ... + 2450546.

It is an arithmetic number, because the mean of its divisors is an integer number (14703192).

Almost surely, 2^73515945 is an apocalyptic number.

It is an amenable number.

73515945 is a deficient number, since it is larger than the sum of its proper divisors (44109591).

73515945 is a wasteful number, since it uses less digits than its factorization.

73515945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901071.

The product of its digits is 94500, while the sum is 39.

The square root of 73515945 is about 8574.1439805965. The cubic root of 73515945 is about 418.9162250892.

The spelling of 73515945 in words is "seventy-three million, five hundred fifteen thousand, nine hundred forty-five".