72494753 has 4 divisors (see below), whose sum is σ = 72573060. Its totient is φ = 72416448.

The previous prime is 72494713. The next prime is 72494761. The reversal of 72494753 is 35749427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35749427 = 7 ⋅5107061.

It can be written as a sum of positive squares in 2 ways, for example, as 1817104 + 70677649 = 1348^2 + 8407^2 .

It is a cyclic number.

It is not a de Polignac number, because 72494753 - 2⁸ = 72494497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72494753.

It is not an unprimeable number, because it can be changed into a prime (72494713) 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, 37748 + ... + 39621.

It is an arithmetic number, because the mean of its divisors is an integer number (18143265).

Almost surely, 2^72494753 is an apocalyptic number.

It is an amenable number.

72494753 is a deficient number, since it is larger than the sum of its proper divisors (78307).

72494753 is an equidigital number, since it uses as much as digits as its factorization.

72494753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78306.

The product of its digits is 211680, while the sum is 41.

The square root of 72494753 is about 8514.3850629391. The cubic root of 72494753 is about 416.9674863036.

The spelling of 72494753 in words is "seventy-two million, four hundred ninety-four thousand, seven hundred fifty-three".