20752811 has 2 divisors, whose sum is σ = 20752812. Its totient is φ = 20752810.

The previous prime is 20752799. The next prime is 20752817. The reversal of 20752811 is 11825702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20752811 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (20752817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10376405 + 10376406.

It is an arithmetic number, because the mean of its divisors is an integer number (10376406).

Almost surely, 2^20752811 is an apocalyptic number.

20752811 is a deficient number, since it is larger than the sum of its proper divisors (1).

20752811 is an equidigital number, since it uses as much as digits as its factorization.

20752811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 20752811 is about 4555.5253264580. The cubic root of 20752811 is about 274.8056411798.

The spelling of 20752811 in words is "twenty million, seven hundred fifty-two thousand, eight hundred eleven".