72756241 has 4 divisors (see below), whose sum is σ = 72802800. Its totient is φ = 72709684.

The previous prime is 72756197. The next prime is 72756269. The reversal of 72756241 is 14265727.

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 a cyclic number.

It is not a de Polignac number, because 72756241 - 2¹¹ = 72754193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72756197 and 72756206.

It is not an unprimeable number, because it can be changed into a prime (72751241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20851 + ... + 24088.

It is an arithmetic number, because the mean of its divisors is an integer number (18200700).

Almost surely, 2^72756241 is an apocalyptic number.

It is an amenable number.

72756241 is a deficient number, since it is larger than the sum of its proper divisors (46559).

72756241 is a wasteful number, since it uses less digits than its factorization.

72756241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46558.

The product of its digits is 23520, while the sum is 34.

The square root of 72756241 is about 8529.7269006692. The cubic root of 72756241 is about 417.4682175479.

The spelling of 72756241 in words is "seventy-two million, seven hundred fifty-six thousand, two hundred forty-one".