72446191 has 2 divisors, whose sum is σ = 72446192. Its totient is φ = 72446190.

The previous prime is 72446173. The next prime is 72446201. The reversal of 72446191 is 19164427.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72446191 - 2⁷ = 72446063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72446131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36223095 + 36223096.

It is an arithmetic number, because the mean of its divisors is an integer number (36223096).

Almost surely, 2^72446191 is an apocalyptic number.

72446191 is a deficient number, since it is larger than the sum of its proper divisors (1).

72446191 is an equidigital number, since it uses as much as digits as its factorization.

72446191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 72446191 is about 8511.5328231759. The cubic root of 72446191 is about 416.8743609520.

The spelling of 72446191 in words is "seventy-two million, four hundred forty-six thousand, one hundred ninety-one".