51548977 has 2 divisors, whose sum is σ = 51548978. Its totient is φ = 51548976.

The previous prime is 51548963. The next prime is 51549007. The reversal of 51548977 is 77984515.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38328481 + 13220496 = 6191^2 + 3636^2 .

It is a cyclic number.

It is not a de Polignac number, because 51548977 - 2¹⁹ = 51024689 is a prime.

It is not a weakly prime, because it can be changed into another prime (51848977) 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, 25774488 + 25774489.

It is an arithmetic number, because the mean of its divisors is an integer number (25774489).

Almost surely, 2^51548977 is an apocalyptic number.

It is an amenable number.

51548977 is a deficient number, since it is larger than the sum of its proper divisors (1).

51548977 is an equidigital number, since it uses as much as digits as its factorization.

51548977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 46.

The square root of 51548977 is about 7179.7616255695. The cubic root of 51548977 is about 372.1688470218.

It can be divided in two parts, 51548 and 977, that added together give a palindrome (52525).

The spelling of 51548977 in words is "fifty-one million, five hundred forty-eight thousand, nine hundred seventy-seven".