51957449 has 2 divisors, whose sum is σ = 51957450. Its totient is φ = 51957448.

The previous prime is 51957427. The next prime is 51957463. The reversal of 51957449 is 94475915.

51957449 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., 50865424 + 1092025 = 7132^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 51957449 - 2¹⁶ = 51891913 is a prime.

It is not a weakly prime, because it can be changed into another prime (51957469) 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, 25978724 + 25978725.

It is an arithmetic number, because the mean of its divisors is an integer number (25978725).

Almost surely, 2^51957449 is an apocalyptic number.

It is an amenable number.

51957449 is a deficient number, since it is larger than the sum of its proper divisors (1).

51957449 is an equidigital number, since it uses as much as digits as its factorization.

51957449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 51957449 is about 7208.1515661090. The cubic root of 51957449 is about 373.1492788723.

The spelling of 51957449 in words is "fifty-one million, nine hundred fifty-seven thousand, four hundred forty-nine".