51340511 has 2 divisors, whose sum is σ = 51340512. Its totient is φ = 51340510.

The previous prime is 51340501. The next prime is 51340519. The reversal of 51340511 is 11504315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51340511 is a prime.

It is a super-2 number, since 2×51340511² = 5271696139482242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51340519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25670255 + 25670256.

It is an arithmetic number, because the mean of its divisors is an integer number (25670256).

Almost surely, 2^51340511 is an apocalyptic number.

51340511 is a deficient number, since it is larger than the sum of its proper divisors (1).

51340511 is an equidigital number, since it uses as much as digits as its factorization.

51340511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51340511 is about 7165.2293054724. The cubic root of 51340511 is about 371.6664809489. Note that the first 3 decimals are identical.

Adding to 51340511 its reverse (11504315), we get a palindrome (62844826).

The spelling of 51340511 in words is "fifty-one million, three hundred forty thousand, five hundred eleven".