51204133 has 2 divisors, whose sum is σ = 51204134. Its totient is φ = 51204132.

The previous prime is 51204089. The next prime is 51204143. The reversal of 51204133 is 33140215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43007364 + 8196769 = 6558^2 + 2863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51204133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51204133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51204143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602066 + 25602067.

It is an arithmetic number, because the mean of its divisors is an integer number (25602067).

Almost surely, 2^51204133 is an apocalyptic number.

It is an amenable number.

51204133 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204133 is an equidigital number, since it uses as much as digits as its factorization.

51204133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51204133 is about 7155.7063243261. The cubic root of 51204133 is about 371.3370979237.

Adding to 51204133 its reverse (33140215), we get a palindrome (84344348).

The spelling of 51204133 in words is "fifty-one million, two hundred four thousand, one hundred thirty-three".