72375191 has 4 divisors (see below), whose sum is σ = 82714512. Its totient is φ = 62035872.

The previous prime is 72375187. The next prime is 72375197. The reversal of 72375191 is 19157327.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72375191 - 2² = 72375187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72375197) 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 in 3 ways as a sum of consecutive naturals, for example, 5169650 + ... + 5169663.

It is an arithmetic number, because the mean of its divisors is an integer number (20678628).

Almost surely, 2^72375191 is an apocalyptic number.

72375191 is a deficient number, since it is larger than the sum of its proper divisors (10339321).

72375191 is a wasteful number, since it uses less digits than its factorization.

72375191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10339320.

The product of its digits is 13230, while the sum is 35.

The square root of 72375191 is about 8507.3609891670. The cubic root of 72375191 is about 416.7381322395.

The spelling of 72375191 in words is "seventy-two million, three hundred seventy-five thousand, one hundred ninety-one".