51514341421 has 2 divisors, whose sum is σ = 51514341422. Its totient is φ = 51514341420.

The previous prime is 51514341353. The next prime is 51514341449. The reversal of 51514341421 is 12414341515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51243376900 + 270964521 = 226370^2 + 16461^2 .

It is a cyclic number.

It is not a de Polignac number, because 51514341421 - 2¹³ = 51514333229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51514341521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25757170710 + 25757170711.

It is an arithmetic number, because the mean of its divisors is an integer number (25757170711).

Almost surely, 2^51514341421 is an apocalyptic number.

It is an amenable number.

51514341421 is a deficient number, since it is larger than the sum of its proper divisors (1).

51514341421 is an equidigital number, since it uses as much as digits as its factorization.

51514341421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

Adding to 51514341421 its reverse (12414341515), we get a palindrome (63928682936).

The spelling of 51514341421 in words is "fifty-one billion, five hundred fourteen million, three hundred forty-one thousand, four hundred twenty-one".