73545563 has 16 divisors (see below), whose sum is σ = 91800576. Its totient is φ = 57365280.

The previous prime is 73545557. The next prime is 73545569. The reversal of 73545563 is 36554537.

It is an interprime number because it is at equal distance from previous prime (73545557) and next prime (73545569).

It is not a de Polignac number, because 73545563 - 2¹⁰ = 73544539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73545569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770 + ... + 12152.

It is an arithmetic number, because the mean of its divisors is an integer number (5737536).

Almost surely, 2^73545563 is an apocalyptic number.

73545563 is a deficient number, since it is larger than the sum of its proper divisors (18255013).

73545563 is a wasteful number, since it uses less digits than its factorization.

73545563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11474.

The product of its digits is 189000, while the sum is 38.

The square root of 73545563 is about 8575.8709761750. The cubic root of 73545563 is about 418.9724749948.

The spelling of 73545563 in words is "seventy-three million, five hundred forty-five thousand, five hundred sixty-three".