51494461 has 2 divisors, whose sum is σ = 51494462. Its totient is φ = 51494460.

The previous prime is 51494449. The next prime is 51494467. The reversal of 51494461 is 16449415.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42380100 + 9114361 = 6510^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 51494461 - 2¹⁵ = 51461693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51494467) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25747230 + 25747231.

It is an arithmetic number, because the mean of its divisors is an integer number (25747231).

Almost surely, 2^51494461 is an apocalyptic number.

It is an amenable number.

51494461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51494461 is an equidigital number, since it uses as much as digits as its factorization.

51494461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 51494461 is about 7175.9641164097. The cubic root of 51494461 is about 372.0376041109.

The spelling of 51494461 in words is "fifty-one million, four hundred ninety-four thousand, four hundred sixty-one".