63571121 has 2 divisors, whose sum is σ = 63571122. Its totient is φ = 63571120.

The previous prime is 63571073. The next prime is 63571133. The reversal of 63571121 is 12117536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63377521 + 193600 = 7961^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 63571121 - 2¹⁰ = 63570097 is a prime.

It is not a weakly prime, because it can be changed into another prime (63571171) 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, 31785560 + 31785561.

It is an arithmetic number, because the mean of its divisors is an integer number (31785561).

Almost surely, 2^63571121 is an apocalyptic number.

It is an amenable number.

63571121 is a deficient number, since it is larger than the sum of its proper divisors (1).

63571121 is an equidigital number, since it uses as much as digits as its factorization.

63571121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 26.

The square root of 63571121 is about 7973.1500048601. The cubic root of 63571121 is about 399.1044987733.

Adding to 63571121 its reverse (12117536), we get a palindrome (75688657).

The spelling of 63571121 in words is "sixty-three million, five hundred seventy-one thousand, one hundred twenty-one".