20451127 has 2 divisors, whose sum is σ = 20451128. Its totient is φ = 20451126.

The previous prime is 20451113. The next prime is 20451131. The reversal of 20451127 is 72115402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20451127 - 2⁷ = 20450999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20451098 and 20451107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20457127) 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 as a sum of consecutive naturals, namely, 10225563 + 10225564.

It is an arithmetic number, because the mean of its divisors is an integer number (10225564).

Almost surely, 2^20451127 is an apocalyptic number.

20451127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20451127 is an equidigital number, since it uses as much as digits as its factorization.

20451127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20451127 is about 4522.2922285054. The cubic root of 20451127 is about 273.4675177299.

Adding to 20451127 its reverse (72115402), we get a palindrome (92566529).

The spelling of 20451127 in words is "twenty million, four hundred fifty-one thousand, one hundred twenty-seven".