51232133 has 2 divisors, whose sum is σ = 51232134. Its totient is φ = 51232132.

The previous prime is 51232091. The next prime is 51232141. The reversal of 51232133 is 33123215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48678529 + 2553604 = 6977^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 51232133 - 2¹⁰ = 51231109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51232163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25616066 + 25616067.

It is an arithmetic number, because the mean of its divisors is an integer number (25616067).

Almost surely, 2^51232133 is an apocalyptic number.

It is an amenable number.

51232133 is a deficient number, since it is larger than the sum of its proper divisors (1).

51232133 is an equidigital number, since it uses as much as digits as its factorization.

51232133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 20.

The square root of 51232133 is about 7157.6625374489. The cubic root of 51232133 is about 371.4047717844.

Adding to 51232133 its reverse (33123215), we get a palindrome (84355348).

The spelling of 51232133 in words is "fifty-one million, two hundred thirty-two thousand, one hundred thirty-three".