73185361 has 2 divisors, whose sum is σ = 73185362. Its totient is φ = 73185360.

The previous prime is 73185353. The next prime is 73185419. The reversal of 73185361 is 16358137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66585600 + 6599761 = 8160^2 + 2569^2 .

It is an emirp because it is prime and its reverse (16358137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73185361 - 2³ = 73185353 is a prime.

It is not a weakly prime, because it can be changed into another prime (73185331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36592680 + 36592681.

It is an arithmetic number, because the mean of its divisors is an integer number (36592681).

Almost surely, 2^73185361 is an apocalyptic number.

It is an amenable number.

73185361 is a deficient number, since it is larger than the sum of its proper divisors (1).

73185361 is an equidigital number, since it uses as much as digits as its factorization.

73185361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 73185361 is about 8554.8443001612. The cubic root of 73185361 is about 418.2873587813.

The spelling of 73185361 in words is "seventy-three million, one hundred eighty-five thousand, three hundred sixty-one".