51513283 has 2 divisors, whose sum is σ = 51513284. Its totient is φ = 51513282.

The previous prime is 51513263. The next prime is 51513299. The reversal of 51513283 is 38231515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51513283 is a prime.

It is not a weakly prime, because it can be changed into another prime (51513263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25756641 + 25756642.

It is an arithmetic number, because the mean of its divisors is an integer number (25756642).

Almost surely, 2^51513283 is an apocalyptic number.

51513283 is a deficient number, since it is larger than the sum of its proper divisors (1).

51513283 is an equidigital number, since it uses as much as digits as its factorization.

51513283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 51513283 is about 7177.2754579994. The cubic root of 51513283 is about 372.0829270359.

Adding to 51513283 its reverse (38231515), we get a palindrome (89744798).

The spelling of 51513283 in words is "fifty-one million, five hundred thirteen thousand, two hundred eighty-three".