72753361 has 2 divisors, whose sum is σ = 72753362. Its totient is φ = 72753360.

The previous prime is 72753341. The next prime is 72753389. The reversal of 72753361 is 16335727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70560000 + 2193361 = 8400^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 72753361 - 2²³ = 64364753 is a prime.

It is not a weakly prime, because it can be changed into another prime (72753341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36376680 + 36376681.

It is an arithmetic number, because the mean of its divisors is an integer number (36376681).

Almost surely, 2^72753361 is an apocalyptic number.

It is an amenable number.

72753361 is a deficient number, since it is larger than the sum of its proper divisors (1).

72753361 is an equidigital number, since it uses as much as digits as its factorization.

72753361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 34.

The square root of 72753361 is about 8529.5580776497. The cubic root of 72753361 is about 417.4627090888.

The spelling of 72753361 in words is "seventy-two million, seven hundred fifty-three thousand, three hundred sixty-one".