51867311 has 2 divisors, whose sum is σ = 51867312. Its totient is φ = 51867310.

The previous prime is 51867301. The next prime is 51867317. The reversal of 51867311 is 11376815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51867311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51867317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25933655 + 25933656.

It is an arithmetic number, because the mean of its divisors is an integer number (25933656).

Almost surely, 2^51867311 is an apocalyptic number.

51867311 is a deficient number, since it is larger than the sum of its proper divisors (1).

51867311 is an equidigital number, since it uses as much as digits as its factorization.

51867311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 51867311 is about 7201.8963474907. The cubic root of 51867311 is about 372.9333688693.

The spelling of 51867311 in words is "fifty-one million, eight hundred sixty-seven thousand, three hundred eleven".