20267057 has 2 divisors, whose sum is σ = 20267058. Its totient is φ = 20267056.

The previous prime is 20267033. The next prime is 20267101. The reversal of 20267057 is 75076202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20106256 + 160801 = 4484^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 20267057 - 2¹² = 20262961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20267657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133528 + 10133529.

It is an arithmetic number, because the mean of its divisors is an integer number (10133529).

Almost surely, 2^20267057 is an apocalyptic number.

It is an amenable number.

20267057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20267057 is an equidigital number, since it uses as much as digits as its factorization.

20267057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20267057 is about 4501.8948232939. The cubic root of 20267057 is about 272.6445973879.

The spelling of 20267057 in words is "twenty million, two hundred sixty-seven thousand, fifty-seven".