73561412 has 6 divisors (see below), whose sum is σ = 128732478. Its totient is φ = 36780704.

The previous prime is 73561391. The next prime is 73561417. The reversal of 73561412 is 21416537.

It can be written as a sum of positive squares in only one way, i.e., 66031876 + 7529536 = 8126^2 + 2744^2 .

It is a super-2 number, since 2×73561412² = 10822562670867488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73561417) 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 as a sum of consecutive naturals, namely, 9195173 + ... + 9195180.

It is an arithmetic number, because the mean of its divisors is an integer number (21455413).

Almost surely, 2^73561412 is an apocalyptic number.

It is an amenable number.

73561412 is a deficient number, since it is larger than the sum of its proper divisors (55171066).

73561412 is a wasteful number, since it uses less digits than its factorization.

73561412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18390357 (or 18390355 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 73561412 is about 8576.7949724824. The cubic root of 73561412 is about 419.0025688919.

Adding to 73561412 its reverse (21416537), we get a palindrome (94977949).

The spelling of 73561412 in words is "seventy-three million, five hundred sixty-one thousand, four hundred twelve".