20064251 has 2 divisors, whose sum is σ = 20064252. Its totient is φ = 20064250.

The previous prime is 20064241. The next prime is 20064277. The reversal of 20064251 is 15246002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20064251 - 2²² = 15869947 is a prime.

It is not a weakly prime, because it can be changed into another prime (20064241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10032125 + 10032126.

It is an arithmetic number, because the mean of its divisors is an integer number (10032126).

Almost surely, 2^20064251 is an apocalyptic number.

20064251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20064251 is an equidigital number, since it uses as much as digits as its factorization.

20064251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20064251 is about 4479.3136751069. The cubic root of 20064251 is about 271.7321243567.

The spelling of 20064251 in words is "twenty million, sixty-four thousand, two hundred fifty-one".