72212753 has 4 divisors (see below), whose sum is σ = 76460580. Its totient is φ = 67964928.

The previous prime is 72212747. The next prime is 72212761. The reversal of 72212753 is 35721227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63170704 + 9042049 = 7948^2 + 3007^2 .

It is a cyclic number.

It is not a de Polignac number, because 72212753 - 2⁴ = 72212737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72212713) 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, 2123888 + ... + 2123921.

It is an arithmetic number, because the mean of its divisors is an integer number (19115145).

Almost surely, 2^72212753 is an apocalyptic number.

It is an amenable number.

72212753 is a deficient number, since it is larger than the sum of its proper divisors (4247827).

72212753 is a wasteful number, since it uses less digits than its factorization.

72212753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247826.

The product of its digits is 5880, while the sum is 29.

The square root of 72212753 is about 8497.8087175460. The cubic root of 72212753 is about 416.4261246994.

The spelling of 72212753 in words is "seventy-two million, two hundred twelve thousand, seven hundred fifty-three".