72950191 has 2 divisors, whose sum is σ = 72950192. Its totient is φ = 72950190.

The previous prime is 72950173. The next prime is 72950239. The reversal of 72950191 is 19105927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72950191 - 2⁵ = 72950159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72950131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36475095 + 36475096.

It is an arithmetic number, because the mean of its divisors is an integer number (36475096).

Almost surely, 2^72950191 is an apocalyptic number.

72950191 is a deficient number, since it is larger than the sum of its proper divisors (1).

72950191 is an equidigital number, since it uses as much as digits as its factorization.

72950191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 72950191 is about 8541.0883966858. The cubic root of 72950191 is about 417.8388438073.

The spelling of 72950191 in words is "seventy-two million, nine hundred fifty thousand, one hundred ninety-one".