72753757 has 2 divisors, whose sum is σ = 72753758. Its totient is φ = 72753756.

The previous prime is 72753749. The next prime is 72753767. The reversal of 72753757 is 75735727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61638201 + 11115556 = 7851^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 72753757 - 2³ = 72753749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72753767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36376878 + 36376879.

It is an arithmetic number, because the mean of its divisors is an integer number (36376879).

Almost surely, 2^72753757 is an apocalyptic number.

It is an amenable number.

72753757 is a deficient number, since it is larger than the sum of its proper divisors (1).

72753757 is an equidigital number, since it uses as much as digits as its factorization.

72753757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360150, while the sum is 43.

The square root of 72753757 is about 8529.5812910131. The cubic root of 72753757 is about 417.4634665105.

The spelling of 72753757 in words is "seventy-two million, seven hundred fifty-three thousand, seven hundred fifty-seven".