51242311 has 2 divisors, whose sum is σ = 51242312. Its totient is φ = 51242310.

The previous prime is 51242293. The next prime is 51242339. The reversal of 51242311 is 11324215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51242311 - 2¹³ = 51234119 is a 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 (51242371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25621155 + 25621156.

It is an arithmetic number, because the mean of its divisors is an integer number (25621156).

Almost surely, 2^51242311 is an apocalyptic number.

51242311 is a deficient number, since it is larger than the sum of its proper divisors (1).

51242311 is an equidigital number, since it uses as much as digits as its factorization.

51242311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 51242311 is about 7158.3734884400. The cubic root of 51242311 is about 371.4293651223.

Adding to 51242311 its reverse (11324215), we get a palindrome (62566526).

The spelling of 51242311 in words is "fifty-one million, two hundred forty-two thousand, three hundred eleven".