20240533 has 2 divisors, whose sum is σ = 20240534. Its totient is φ = 20240532.

The previous prime is 20240531. The next prime is 20240543. The reversal of 20240533 is 33504202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13490929 + 6749604 = 3673^2 + 2598^2 .

It is a cyclic number.

It is not a de Polignac number, because 20240533 - 2¹ = 20240531 is a prime.

It is a super-2 number, since 2×20240533² = 819358352248178, which contains 22 as substring.

Together with 20240531, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20240533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20240531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10120266 + 10120267.

It is an arithmetic number, because the mean of its divisors is an integer number (10120267).

Almost surely, 2^20240533 is an apocalyptic number.

It is an amenable number.

20240533 is a deficient number, since it is larger than the sum of its proper divisors (1).

20240533 is an equidigital number, since it uses as much as digits as its factorization.

20240533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20240533 is about 4498.9479881412. The cubic root of 20240533 is about 272.5256065492.

Adding to 20240533 its reverse (33504202), we get a palindrome (53744735).

The spelling of 20240533 in words is "twenty million, two hundred forty thousand, five hundred thirty-three".