20056651 has 8 divisors (see below), whose sum is σ = 21554640. Its totient is φ = 18594048.

The previous prime is 20056607. The next prime is 20056669. The reversal of 20056651 is 15665002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20056651 - 2⁷ = 20056523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20056691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7666 + ... + 9943.

It is an arithmetic number, because the mean of its divisors is an integer number (2694330).

Almost surely, 2^20056651 is an apocalyptic number.

20056651 is a deficient number, since it is larger than the sum of its proper divisors (1497989).

20056651 is a wasteful number, since it uses less digits than its factorization.

20056651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17693.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 20056651 is about 4478.4652505071. The cubic root of 20056651 is about 271.6978108414.

The spelling of 20056651 in words is "twenty million, fifty-six thousand, six hundred fifty-one".