51749101 has 2 divisors, whose sum is σ = 51749102. Its totient is φ = 51749100.

The previous prime is 51749069. The next prime is 51749119. The reversal of 51749101 is 10194715.

51749101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45549001 + 6200100 = 6749^2 + 2490^2 .

It is a cyclic number.

It is not a de Polignac number, because 51749101 - 2⁵ = 51749069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51749101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51749161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25874550 + 25874551.

It is an arithmetic number, because the mean of its divisors is an integer number (25874551).

Almost surely, 2^51749101 is an apocalyptic number.

It is an amenable number.

51749101 is a deficient number, since it is larger than the sum of its proper divisors (1).

51749101 is an equidigital number, since it uses as much as digits as its factorization.

51749101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 51749101 is about 7193.6847998783. The cubic root of 51749101 is about 372.6498377725.

The spelling of 51749101 in words is "fifty-one million, seven hundred forty-nine thousand, one hundred one".