51313033 has 2 divisors, whose sum is σ = 51313034. Its totient is φ = 51313032.

The previous prime is 51313013. The next prime is 51313081. The reversal of 51313033 is 33031315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40043584 + 11269449 = 6328^2 + 3357^2 .

It is a cyclic number.

It is not a de Polignac number, because 51313033 - 2⁵ = 51313001 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 51313033.

It is not a weakly prime, because it can be changed into another prime (51313013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25656516 + 25656517.

It is an arithmetic number, because the mean of its divisors is an integer number (25656517).

Almost surely, 2^51313033 is an apocalyptic number.

It is an amenable number.

51313033 is a deficient number, since it is larger than the sum of its proper divisors (1).

51313033 is an equidigital number, since it uses as much as digits as its factorization.

51313033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 19.

The square root of 51313033 is about 7163.3115945071. The cubic root of 51313033 is about 371.6001624681.

Adding to 51313033 its reverse (33031315), we get a palindrome (84344348).

It can be divided in two parts, 513130 and 33, that multiplied together give a triangular number (16933290 = T₅₈₁₉).

The spelling of 51313033 in words is "fifty-one million, three hundred thirteen thousand, thirty-three".