72193601 has 4 divisors (see below), whose sum is σ = 72211392. Its totient is φ = 72175812.

The previous prime is 72193591. The next prime is 72193609. The reversal of 72193601 is 10639127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10639127 = 17 ⋅625831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72193601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72193609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500 + ... + 12026.

It is an arithmetic number, because the mean of its divisors is an integer number (18052848).

Almost surely, 2^72193601 is an apocalyptic number.

It is an amenable number.

72193601 is a deficient number, since it is larger than the sum of its proper divisors (17791).

72193601 is a wasteful number, since it uses less digits than its factorization.

72193601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17790.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 72193601 is about 8496.6817640771. The cubic root of 72193601 is about 416.3893071108.

The spelling of 72193601 in words is "seventy-two million, one hundred ninety-three thousand, six hundred one".