73561361 has 4 divisors (see below), whose sum is σ = 73592832. Its totient is φ = 73529892.

The previous prime is 73561351. The next prime is 73561379. The reversal of 73561361 is 16316537.

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 73561361 - 2¹⁰ = 73560337 is a prime.

It is a super-2 number, since 2×73561361² = 10822547664344642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73561351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11921 + ... + 17006.

It is an arithmetic number, because the mean of its divisors is an integer number (18398208).

Almost surely, 2^73561361 is an apocalyptic number.

It is an amenable number.

73561361 is a deficient number, since it is larger than the sum of its proper divisors (31471).

73561361 is a wasteful number, since it uses less digits than its factorization.

73561361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31470.

The product of its digits is 11340, while the sum is 32.

The square root of 73561361 is about 8576.7919993433. The cubic root of 73561361 is about 419.0024720606.

Adding to 73561361 its reverse (16316537), we get a palindrome (89877898).

The spelling of 73561361 in words is "seventy-three million, five hundred sixty-one thousand, three hundred sixty-one".