20013051 has 4 divisors (see below), whose sum is σ = 26684072. Its totient is φ = 13342032.

The previous prime is 20013031. The next prime is 20013053. The reversal of 20013051 is 15031002.

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

It is not a de Polignac number, because 20013051 - 2¹⁵ = 19980283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335506 + ... + 3335511.

It is an arithmetic number, because the mean of its divisors is an integer number (6671018).

Almost surely, 2^20013051 is an apocalyptic number.

20013051 is a deficient number, since it is larger than the sum of its proper divisors (6671021).

20013051 is an equidigital number, since it uses as much as digits as its factorization.

20013051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671020.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 20013051 is about 4473.5948631945. The cubic root of 20013051 is about 271.5007919285.

Adding to 20013051 its reverse (15031002), we get a palindrome (35044053).

The spelling of 20013051 in words is "twenty million, thirteen thousand, fifty-one".