72550033 has 8 divisors (see below), whose sum is σ = 78692040. Its totient is φ = 66616320.

The previous prime is 72550031. The next prime is 72550039. The reversal of 72550033 is 33005527.

It can be written as a sum of positive squares in 4 ways, for example, as 14531344 + 58018689 = 3812^2 + 7617^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72550033 - 2¹ = 72550031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72550031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51348 + ... + 52741.

It is an arithmetic number, because the mean of its divisors is an integer number (9836505).

Almost surely, 2^72550033 is an apocalyptic number.

It is an amenable number.

72550033 is a deficient number, since it is larger than the sum of its proper divisors (6142007).

72550033 is a wasteful number, since it uses less digits than its factorization.

72550033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104147.

The product of its (nonzero) digits is 3150, while the sum is 25.

The square root of 72550033 is about 8517.6307151696. The cubic root of 72550033 is about 417.0734438861.

The spelling of 72550033 in words is "seventy-two million, five hundred fifty thousand, thirty-three".