72901783 has 2 divisors, whose sum is σ = 72901784. Its totient is φ = 72901782.

The previous prime is 72901723. The next prime is 72901793. The reversal of 72901783 is 38710927.

It is a strong prime.

It is an emirp because it is prime and its reverse (38710927) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72901783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72901723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36450891 + 36450892.

It is an arithmetic number, because the mean of its divisors is an integer number (36450892).

Almost surely, 2^72901783 is an apocalyptic number.

72901783 is a deficient number, since it is larger than the sum of its proper divisors (1).

72901783 is an equidigital number, since it uses as much as digits as its factorization.

72901783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 72901783 is about 8538.2540955397. The cubic root of 72901783 is about 417.7464007393.

The spelling of 72901783 in words is "seventy-two million, nine hundred one thousand, seven hundred eighty-three".