51548461 has 2 divisors, whose sum is σ = 51548462. Its totient is φ = 51548460.

The previous prime is 51548459. The next prime is 51548467. The reversal of 51548461 is 16484515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 4076361 = 6890^2 + 2019^2 .

It is a cyclic number.

It is not a de Polignac number, because 51548461 - 2¹ = 51548459 is a prime.

Together with 51548459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51548467) 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, 25774230 + 25774231.

It is an arithmetic number, because the mean of its divisors is an integer number (25774231).

Almost surely, 2^51548461 is an apocalyptic number.

It is an amenable number.

51548461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51548461 is an equidigital number, since it uses as much as digits as its factorization.

51548461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 34.

The square root of 51548461 is about 7179.7256911389. The cubic root of 51548461 is about 372.1676052269.

The spelling of 51548461 in words is "fifty-one million, five hundred forty-eight thousand, four hundred sixty-one".