20051297 has 8 divisors (see below), whose sum is σ = 22963776. Its totient is φ = 17150832.

The previous prime is 20051293. The next prime is 20051303. The reversal of 20051297 is 79215002.

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 20051297 - 2² = 20051293 is a prime.

It is a super-2 number, since 2×20051297² = 804109022764418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20051293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923 + ... + 6399.

It is an arithmetic number, because the mean of its divisors is an integer number (2870472).

Almost surely, 2^20051297 is an apocalyptic number.

It is an amenable number.

20051297 is a deficient number, since it is larger than the sum of its proper divisors (2912479).

20051297 is an equidigital number, since it uses as much as digits as its factorization.

20051297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 20051297 is about 4477.8674611918. The cubic root of 20051297 is about 271.6736326683.

Adding to 20051297 its reverse (79215002), we get a palindrome (99266299).

The spelling of 20051297 in words is "twenty million, fifty-one thousand, two hundred ninety-seven".