51474641 has 2 divisors, whose sum is σ = 51474642. Its totient is φ = 51474640.

The previous prime is 51474637. The next prime is 51474649. The reversal of 51474641 is 14647415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35153041 + 16321600 = 5929^2 + 4040^2 .

It is a cyclic number.

It is not a de Polignac number, because 51474641 - 2² = 51474637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51474598 and 51474607.

It is not a weakly prime, because it can be changed into another prime (51474649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25737320 + 25737321.

It is an arithmetic number, because the mean of its divisors is an integer number (25737321).

Almost surely, 2^51474641 is an apocalyptic number.

It is an amenable number.

51474641 is a deficient number, since it is larger than the sum of its proper divisors (1).

51474641 is an equidigital number, since it uses as much as digits as its factorization.

51474641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 51474641 is about 7174.5829843971. The cubic root of 51474641 is about 371.9898660861.

The spelling of 51474641 in words is "fifty-one million, four hundred seventy-four thousand, six hundred forty-one".