20066051 has 4 divisors (see below), whose sum is σ = 20938512. Its totient is φ = 19193592.

The previous prime is 20066047. The next prime is 20066063. The reversal of 20066051 is 15066002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20066051 - 2² = 20066047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20066041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436196 + ... + 436241.

It is an arithmetic number, because the mean of its divisors is an integer number (5234628).

Almost surely, 2^20066051 is an apocalyptic number.

20066051 is a deficient number, since it is larger than the sum of its proper divisors (872461).

20066051 is an equidigital number, since it uses as much as digits as its factorization.

20066051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872460.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20066051 is about 4479.5145942390. The cubic root of 20066051 is about 271.7402499727.

The spelling of 20066051 in words is "twenty million, sixty-six thousand, fifty-one".