51812741 has 2 divisors, whose sum is σ = 51812742. Its totient is φ = 51812740.

The previous prime is 51812731. The next prime is 51812743. The reversal of 51812741 is 14721815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50481025 + 1331716 = 7105^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 51812741 - 2¹⁰ = 51811717 is a prime.

Together with 51812743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51812743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25906370 + 25906371.

It is an arithmetic number, because the mean of its divisors is an integer number (25906371).

Almost surely, 2^51812741 is an apocalyptic number.

It is an amenable number.

51812741 is a deficient number, since it is larger than the sum of its proper divisors (1).

51812741 is an equidigital number, since it uses as much as digits as its factorization.

51812741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 29.

The square root of 51812741 is about 7198.1067649765. The cubic root of 51812741 is about 372.8025342784.

The spelling of 51812741 in words is "fifty-one million, eight hundred twelve thousand, seven hundred forty-one".