20264851 has 2 divisors, whose sum is σ = 20264852. Its totient is φ = 20264850.

The previous prime is 20264819. The next prime is 20264857. The reversal of 20264851 is 15846202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20264851 - 2⁵ = 20264819 is a prime.

It is not a weakly prime, because it can be changed into another prime (20264857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10132425 + 10132426.

It is an arithmetic number, because the mean of its divisors is an integer number (10132426).

Almost surely, 2^20264851 is an apocalyptic number.

20264851 is a deficient number, since it is larger than the sum of its proper divisors (1).

20264851 is an equidigital number, since it uses as much as digits as its factorization.

20264851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20264851 is about 4501.6498086813. The cubic root of 20264851 is about 272.6347048843.

It can be divided in two parts, 20264 and 851, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20264851 in words is "twenty million, two hundred sixty-four thousand, eight hundred fifty-one".