20051007 has 8 divisors (see below), whose sum is σ = 28307376. Its totient is φ = 12580992.

The previous prime is 20050981. The next prime is 20051047. The reversal of 20051007 is 70015002.

It is a happy number.

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

It is not a de Polignac number, because 20051007 - 2⁷ = 20050879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051047) 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, 196528 + ... + 196629.

It is an arithmetic number, because the mean of its divisors is an integer number (3538422).

Almost surely, 2^20051007 is an apocalyptic number.

20051007 is a deficient number, since it is larger than the sum of its proper divisors (8256369).

20051007 is a wasteful number, since it uses less digits than its factorization.

20051007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393177.

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

The square root of 20051007 is about 4477.8350795892. The cubic root of 20051007 is about 271.6723229321.

Adding to 20051007 its reverse (70015002), we get a palindrome (90066009).

The spelling of 20051007 in words is "twenty million, fifty-one thousand, seven".