72155183 has 2 divisors, whose sum is σ = 72155184. Its totient is φ = 72155182.

The previous prime is 72155113. The next prime is 72155201. The reversal of 72155183 is 38155127.

It is a strong prime.

It is an emirp because it is prime and its reverse (38155127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72155183 - 2¹² = 72151087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72155113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36077591 + 36077592.

It is an arithmetic number, because the mean of its divisors is an integer number (36077592).

Almost surely, 2^72155183 is an apocalyptic number.

72155183 is a deficient number, since it is larger than the sum of its proper divisors (1).

72155183 is an equidigital number, since it uses as much as digits as its factorization.

72155183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 32.

The square root of 72155183 is about 8494.4206983172. The cubic root of 72155183 is about 416.3154331450.

The spelling of 72155183 in words is "seventy-two million, one hundred fifty-five thousand, one hundred eighty-three".