72055033 has 4 divisors (see below), whose sum is σ = 72126628. Its totient is φ = 71983440.

The previous prime is 72055007. The next prime is 72055063. The reversal of 72055033 is 33055027.

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 28005264 + 44049769 = 5292^2 + 6637^2 .

It is a cyclic number.

It is not a de Polignac number, because 72055033 - 2⁵ = 72055001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72054989 and 72055007.

It is not an unprimeable number, because it can be changed into a prime (72055003) 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, 34266 + ... + 36307.

It is an arithmetic number, because the mean of its divisors is an integer number (18031657).

Almost surely, 2^72055033 is an apocalyptic number.

It is an amenable number.

72055033 is a deficient number, since it is larger than the sum of its proper divisors (71595).

72055033 is a wasteful number, since it uses less digits than its factorization.

72055033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71594.

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

The square root of 72055033 is about 8488.5236054334. The cubic root of 72055033 is about 416.1227313693.

The spelling of 72055033 in words is "seventy-two million, fifty-five thousand, thirty-three".