20533049 has 2 divisors, whose sum is σ = 20533050. Its totient is φ = 20533048.

The previous prime is 20533001. The next prime is 20533063. The reversal of 20533049 is 94033502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 570025 = 4468^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 20533049 - 2⁸ = 20532793 is a prime.

It is a super-2 number, since 2×20533049² = 843212202472802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20533649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266524 + 10266525.

It is an arithmetic number, because the mean of its divisors is an integer number (10266525).

Almost surely, 2^20533049 is an apocalyptic number.

It is an amenable number.

20533049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533049 is an equidigital number, since it uses as much as digits as its factorization.

20533049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 20533049 is about 4531.3407508154. The cubic root of 20533049 is about 273.8321782985.

It can be divided in two parts, 205330 and 49, that added together give a cube (205379 = 59³).

The spelling of 20533049 in words is "twenty million, five hundred thirty-three thousand, forty-nine".