63357121 has 2 divisors, whose sum is σ = 63357122. Its totient is φ = 63357120.

The previous prime is 63357089. The next prime is 63357163. The reversal of 63357121 is 12175336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48108096 + 15249025 = 6936^2 + 3905^2 .

It is a cyclic number.

It is not a de Polignac number, because 63357121 - 2⁵ = 63357089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63357121.

It is not a weakly prime, because it can be changed into another prime (63357221) 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, 31678560 + 31678561.

It is an arithmetic number, because the mean of its divisors is an integer number (31678561).

Almost surely, 2^63357121 is an apocalyptic number.

It is an amenable number.

63357121 is a deficient number, since it is larger than the sum of its proper divisors (1).

63357121 is an equidigital number, since it uses as much as digits as its factorization.

63357121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 63357121 is about 7959.7186508067. The cubic root of 63357121 is about 398.6561590346.

It can be divided in two parts, 6335 and 7121, that added together give a square (13456 = 116²).

The spelling of 63357121 in words is "sixty-three million, three hundred fifty-seven thousand, one hundred twenty-one".