72113563 has 2 divisors, whose sum is σ = 72113564. Its totient is φ = 72113562.

The previous prime is 72113539. The next prime is 72113599. The reversal of 72113563 is 36531127.

It is a weak prime.

It is an emirp because it is prime and its reverse (36531127) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72113563 is a prime.

It is not a weakly prime, because it can be changed into another prime (72113663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36056781 + 36056782.

It is an arithmetic number, because the mean of its divisors is an integer number (36056782).

Almost surely, 2^72113563 is an apocalyptic number.

72113563 is a deficient number, since it is larger than the sum of its proper divisors (1).

72113563 is an equidigital number, since it uses as much as digits as its factorization.

72113563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 72113563 is about 8491.9705015974. The cubic root of 72113563 is about 416.2353724565.

The spelling of 72113563 in words is "seventy-two million, one hundred thirteen thousand, five hundred sixty-three".