72249753 has 4 divisors (see below), whose sum is σ = 96333008. Its totient is φ = 48166500.

The previous prime is 72249733. The next prime is 72249769. The reversal of 72249753 is 35794227.

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.

It is not a de Polignac number, because 72249753 - 2⁹ = 72249241 is a prime.

It is a super-2 number, since 2×72249753² = 10440053617122018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72249713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12041623 + ... + 12041628.

It is an arithmetic number, because the mean of its divisors is an integer number (24083252).

Almost surely, 2^72249753 is an apocalyptic number.

It is an amenable number.

72249753 is a deficient number, since it is larger than the sum of its proper divisors (24083255).

72249753 is a wasteful number, since it uses less digits than its factorization.

72249753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24083254.

The product of its digits is 105840, while the sum is 39.

The square root of 72249753 is about 8499.9854705758. The cubic root of 72249753 is about 416.4972346498.

The spelling of 72249753 in words is "seventy-two million, two hundred forty-nine thousand, seven hundred fifty-three".