73156361 has 4 divisors (see below), whose sum is σ = 73174800. Its totient is φ = 73137924.

The previous prime is 73156351. The next prime is 73156367. The reversal of 73156361 is 16365137.

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 73156361 - 2²⁶ = 6047497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73156367) 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, 551 + ... + 12108.

It is an arithmetic number, because the mean of its divisors is an integer number (18293700).

Almost surely, 2^73156361 is an apocalyptic number.

It is an amenable number.

73156361 is a deficient number, since it is larger than the sum of its proper divisors (18439).

73156361 is a wasteful number, since it uses less digits than its factorization.

73156361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18438.

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

The square root of 73156361 is about 8553.1491861185. The cubic root of 73156361 is about 418.2321021206.

The spelling of 73156361 in words is "seventy-three million, one hundred fifty-six thousand, three hundred sixty-one".