73745161 has 4 divisors (see below), whose sum is σ = 84280192. Its totient is φ = 63210132.

The previous prime is 73745143. The next prime is 73745171. The reversal of 73745161 is 16154737.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73745161 - 2¹⁷ = 73614089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73745171) 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, 5267505 + ... + 5267518.

It is an arithmetic number, because the mean of its divisors is an integer number (21070048).

Almost surely, 2^73745161 is an apocalyptic number.

It is an amenable number.

73745161 is a deficient number, since it is larger than the sum of its proper divisors (10535031).

73745161 is a wasteful number, since it uses less digits than its factorization.

73745161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10535030.

The product of its digits is 17640, while the sum is 34.

The square root of 73745161 is about 8587.5002765648. The cubic root of 73745161 is about 419.3511542179.

Adding to 73745161 its reverse (16154737), we get a palindrome (89899898).

The spelling of 73745161 in words is "seventy-three million, seven hundred forty-five thousand, one hundred sixty-one".