52720033 has 4 divisors (see below), whose sum is σ = 53122608. Its totient is φ = 52317460.

The previous prime is 52720027. The next prime is 52720039. The reversal of 52720033 is 33002725.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (52720027) and next prime (52720039).

It is a cyclic number.

It is not a de Polignac number, because 52720033 - 2¹⁷ = 52588961 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52719986 and 52720013.

It is not an unprimeable number, because it can be changed into a prime (52720039) 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, 201091 + ... + 201352.

It is an arithmetic number, because the mean of its divisors is an integer number (13280652).

Almost surely, 2^52720033 is an apocalyptic number.

It is an amenable number.

52720033 is a deficient number, since it is larger than the sum of its proper divisors (402575).

52720033 is a wasteful number, since it uses less digits than its factorization.

52720033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402574.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 52720033 is about 7260.8562167282. The cubic root of 52720033 is about 374.9660010658.

Adding to 52720033 its reverse (33002725), we get a palindrome (85722758).

The spelling of 52720033 in words is "fifty-two million, seven hundred twenty thousand, thirty-three".