51240383 has 2 divisors, whose sum is σ = 51240384. Its totient is φ = 51240382.

The previous prime is 51240373. The next prime is 51240407. The reversal of 51240383 is 38304215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51240383 - 2¹² = 51236287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51240313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620191 + 25620192.

It is an arithmetic number, because the mean of its divisors is an integer number (25620192).

Almost surely, 2^51240383 is an apocalyptic number.

51240383 is a deficient number, since it is larger than the sum of its proper divisors (1).

51240383 is an equidigital number, since it uses as much as digits as its factorization.

51240383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 51240383 is about 7158.2388197098. The cubic root of 51240383 is about 371.4247067011.

Adding to 51240383 its reverse (38304215), we get a palindrome (89544598).

The spelling of 51240383 in words is "fifty-one million, two hundred forty thousand, three hundred eighty-three".