72575791 has 2 divisors, whose sum is σ = 72575792. Its totient is φ = 72575790.

The previous prime is 72575779. The next prime is 72575803. The reversal of 72575791 is 19757527.

It is a balanced prime because it is at equal distance from previous prime (72575779) and next prime (72575803).

It is an emirp because it is prime and its reverse (19757527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72575791 - 2⁷ = 72575663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72575761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36287895 + 36287896.

It is an arithmetic number, because the mean of its divisors is an integer number (36287896).

Almost surely, 2^72575791 is an apocalyptic number.

72575791 is a deficient number, since it is larger than the sum of its proper divisors (1).

72575791 is an equidigital number, since it uses as much as digits as its factorization.

72575791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 154350, while the sum is 43.

The square root of 72575791 is about 8519.1426211797. The cubic root of 72575791 is about 417.1227969839.

The spelling of 72575791 in words is "seventy-two million, five hundred seventy-five thousand, seven hundred ninety-one".