63531277 has 2 divisors, whose sum is σ = 63531278. Its totient is φ = 63531276.

The previous prime is 63531233. The next prime is 63531289. The reversal of 63531277 is 77213536.

63531277 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., 54922921 + 8608356 = 7411^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 63531277 - 2¹⁹ = 63006989 is a prime.

It is equal to p_3758902 and since 63531277 and 3758902 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63531077) 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, 31765638 + 31765639.

It is an arithmetic number, because the mean of its divisors is an integer number (31765639).

Almost surely, 2^63531277 is an apocalyptic number.

It is an amenable number.

63531277 is a deficient number, since it is larger than the sum of its proper divisors (1).

63531277 is an equidigital number, since it uses as much as digits as its factorization.

63531277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 34.

The square root of 63531277 is about 7970.6509771787. The cubic root of 63531277 is about 399.0211000916.

The spelling of 63531277 in words is "sixty-three million, five hundred thirty-one thousand, two hundred seventy-seven".