51014921 has 2 divisors, whose sum is σ = 51014922. Its totient is φ = 51014920.

The previous prime is 51014893. The next prime is 51014927. The reversal of 51014921 is 12941015.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40704400 + 10310521 = 6380^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 51014921 - 2¹⁸ = 50752777 is a prime.

It is a Chen prime.

It is equal to p_3058331 and since 51014921 and 3058331 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51014927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25507460 + 25507461.

It is an arithmetic number, because the mean of its divisors is an integer number (25507461).

Almost surely, 2^51014921 is an apocalyptic number.

It is an amenable number.

51014921 is a deficient number, since it is larger than the sum of its proper divisors (1).

51014921 is an equidigital number, since it uses as much as digits as its factorization.

51014921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 51014921 is about 7142.4730311006. The cubic root of 51014921 is about 370.8791390738.

Adding to 51014921 its reverse (12941015), we get a palindrome (63955936).

The spelling of 51014921 in words is "fifty-one million, fourteen thousand, nine hundred twenty-one".