51672641 has 2 divisors, whose sum is σ = 51672642. Its totient is φ = 51672640.

The previous prime is 51672637. The next prime is 51672659. The reversal of 51672641 is 14627615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32444416 + 19228225 = 5696^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 51672641 - 2² = 51672637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51672598 and 51672607.

It is not a weakly prime, because it can be changed into another prime (51672671) 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, 25836320 + 25836321.

It is an arithmetic number, because the mean of its divisors is an integer number (25836321).

Almost surely, 2^51672641 is an apocalyptic number.

It is an amenable number.

51672641 is a deficient number, since it is larger than the sum of its proper divisors (1).

51672641 is an equidigital number, since it uses as much as digits as its factorization.

51672641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 51672641 is about 7188.3684518811. The cubic root of 51672641 is about 372.4662155748.

The spelling of 51672641 in words is "fifty-one million, six hundred seventy-two thousand, six hundred forty-one".