20045051 has 8 divisors (see below), whose sum is σ = 21744240. Its totient is φ = 18368352.

The previous prime is 20045017. The next prime is 20045063. The reversal of 20045051 is 15054002.

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 20045051 - 2⁶ = 20044987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045651) 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, 3740 + ... + 7353.

It is an arithmetic number, because the mean of its divisors is an integer number (2718030).

Almost surely, 2^20045051 is an apocalyptic number.

20045051 is a deficient number, since it is larger than the sum of its proper divisors (1699189).

20045051 is a wasteful number, since it uses less digits than its factorization.

20045051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 20045051 is about 4477.1699766705. The cubic root of 20045051 is about 271.6454208652.

Adding to 20045051 its reverse (15054002), we get a palindrome (35099053).

The spelling of 20045051 in words is "twenty million, forty-five thousand, fifty-one".