20345033 has 2 divisors, whose sum is σ = 20345034. Its totient is φ = 20345032.

The previous prime is 20345023. The next prime is 20345051. The reversal of 20345033 is 33054302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18421264 + 1923769 = 4292^2 + 1387^2 .

It is a cyclic number.

It is not a de Polignac number, because 20345033 - 2⁶ = 20344969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20344996 and 20345014.

It is not a weakly prime, because it can be changed into another prime (20345023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172516 + 10172517.

It is an arithmetic number, because the mean of its divisors is an integer number (10172517).

Almost surely, 2^20345033 is an apocalyptic number.

It is an amenable number.

20345033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345033 is an equidigital number, since it uses as much as digits as its factorization.

20345033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 20345033 is about 4510.5468626321. The cubic root of 20345033 is about 272.9938098754.

Adding to 20345033 its reverse (33054302), we get a palindrome (53399335).

The spelling of 20345033 in words is "twenty million, three hundred forty-five thousand, thirty-three".