20007051 has 4 divisors (see below), whose sum is σ = 26676072. Its totient is φ = 13338032.

The previous prime is 20007049. The next prime is 20007061. The reversal of 20007051 is 15070002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20007051 - 2¹ = 20007049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20007051.

It is not an unprimeable number, because it can be changed into a prime (20007041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3334506 + ... + 3334511.

It is an arithmetic number, because the mean of its divisors is an integer number (6669018).

Almost surely, 2^20007051 is an apocalyptic number.

20007051 is a deficient number, since it is larger than the sum of its proper divisors (6669021).

20007051 is an equidigital number, since it uses as much as digits as its factorization.

20007051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669020.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 20007051 is about 4472.9242112962. The cubic root of 20007051 is about 271.4736568426.

Adding to 20007051 its reverse (15070002), we get a palindrome (35077053).

The spelling of 20007051 in words is "twenty million, seven thousand, fifty-one".