51185441 has 2 divisors, whose sum is σ = 51185442. Its totient is φ = 51185440.

The previous prime is 51185429. The next prime is 51185479. The reversal of 51185441 is 14458115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38254225 + 12931216 = 6185^2 + 3596^2 .

It is a cyclic number.

It is not a de Polignac number, because 51185441 - 2¹⁰ = 51184417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51185341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25592720 + 25592721.

It is an arithmetic number, because the mean of its divisors is an integer number (25592721).

Almost surely, 2^51185441 is an apocalyptic number.

It is an amenable number.

51185441 is a deficient number, since it is larger than the sum of its proper divisors (1).

51185441 is an equidigital number, since it uses as much as digits as its factorization.

51185441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 29.

The square root of 51185441 is about 7154.4001146148. The cubic root of 51185441 is about 371.2919070546.

The spelling of 51185441 in words is "fifty-one million, one hundred eighty-five thousand, four hundred forty-one".