51427133 has 2 divisors, whose sum is σ = 51427134. Its totient is φ = 51427132.

The previous prime is 51427099. The next prime is 51427147. The reversal of 51427133 is 33172415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31114084 + 20313049 = 5578^2 + 4507^2 .

It is a cyclic number.

It is not a de Polignac number, because 51427133 - 2¹⁸ = 51164989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51427153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25713566 + 25713567.

It is an arithmetic number, because the mean of its divisors is an integer number (25713567).

Almost surely, 2^51427133 is an apocalyptic number.

It is an amenable number.

51427133 is a deficient number, since it is larger than the sum of its proper divisors (1).

51427133 is an equidigital number, since it uses as much as digits as its factorization.

51427133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 51427133 is about 7171.2713656645. The cubic root of 51427133 is about 371.8753894307.

Adding to 51427133 its reverse (33172415), we get a palindrome (84599548).

The spelling of 51427133 in words is "fifty-one million, four hundred twenty-seven thousand, one hundred thirty-three".