51147133 has 2 divisors, whose sum is σ = 51147134. Its totient is φ = 51147132.

The previous prime is 51147127. The next prime is 51147137. The reversal of 51147133 is 33174115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38601369 + 12545764 = 6213^2 + 3542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51147133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51147098 and 51147107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51147137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25573566 + 25573567.

It is an arithmetic number, because the mean of its divisors is an integer number (25573567).

Almost surely, 2^51147133 is an apocalyptic number.

It is an amenable number.

51147133 is a deficient number, since it is larger than the sum of its proper divisors (1).

51147133 is an equidigital number, since it uses as much as digits as its factorization.

51147133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 51147133 is about 7151.7223799586. The cubic root of 51147133 is about 371.1992570098.

The spelling of 51147133 in words is "fifty-one million, one hundred forty-seven thousand, one hundred thirty-three".