51542473 has 2 divisors, whose sum is σ = 51542474. Its totient is φ = 51542472.

The previous prime is 51542461. The next prime is 51542479. The reversal of 51542473 is 37424515.

51542473 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., 50168889 + 1373584 = 7083^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 51542473 - 2¹⁷ = 51411401 is a prime.

It is not a weakly prime, because it can be changed into another prime (51542479) 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, 25771236 + 25771237.

It is an arithmetic number, because the mean of its divisors is an integer number (25771237).

Almost surely, 2^51542473 is an apocalyptic number.

It is an amenable number.

51542473 is a deficient number, since it is larger than the sum of its proper divisors (1).

51542473 is an equidigital number, since it uses as much as digits as its factorization.

51542473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 31.

The square root of 51542473 is about 7179.3086714530. The cubic root of 51542473 is about 372.1531940245.

Adding to 51542473 its reverse (37424515), we get a palindrome (88966988).

The spelling of 51542473 in words is "fifty-one million, five hundred forty-two thousand, four hundred seventy-three".