51519311 has 2 divisors, whose sum is σ = 51519312. Its totient is φ = 51519310.

The previous prime is 51519271. The next prime is 51519337. The reversal of 51519311 is 11391515.

It is an a-pointer prime, because the next prime (51519337) can be obtained adding 51519311 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51519311 - 2¹⁰ = 51518287 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51519371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25759655 + 25759656.

It is an arithmetic number, because the mean of its divisors is an integer number (25759656).

Almost surely, 2^51519311 is an apocalyptic number.

51519311 is a deficient number, since it is larger than the sum of its proper divisors (1).

51519311 is an equidigital number, since it uses as much as digits as its factorization.

51519311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 26.

The square root of 51519311 is about 7177.6953822240. The cubic root of 51519311 is about 372.0974399814.

The spelling of 51519311 in words is "fifty-one million, five hundred nineteen thousand, three hundred eleven".