51843413 has 2 divisors, whose sum is σ = 51843414. Its totient is φ = 51843412.

The previous prime is 51843367. The next prime is 51843527. The reversal of 51843413 is 31434815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51509329 + 334084 = 7177^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 51843413 - 2¹² = 51839317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51845413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25921706 + 25921707.

It is an arithmetic number, because the mean of its divisors is an integer number (25921707).

Almost surely, 2^51843413 is an apocalyptic number.

It is an amenable number.

51843413 is a deficient number, since it is larger than the sum of its proper divisors (1).

51843413 is an equidigital number, since it uses as much as digits as its factorization.

51843413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 51843413 is about 7200.2370099879. The cubic root of 51843413 is about 372.8760833933.

The spelling of 51843413 in words is "fifty-one million, eight hundred forty-three thousand, four hundred thirteen".