63531241 has 4 divisors (see below), whose sum is σ = 63808900. Its totient is φ = 63253584.

The previous prime is 63531233. The next prime is 63531277. The reversal of 63531241 is 14213536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27878400 + 35652841 = 5280^2 + 5971^2 .

It is a cyclic number.

It is not a de Polignac number, because 63531241 - 2³ = 63531233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63531211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138486 + ... + 138943.

It is an arithmetic number, because the mean of its divisors is an integer number (15952225).

Almost surely, 2^63531241 is an apocalyptic number.

It is an amenable number.

63531241 is a deficient number, since it is larger than the sum of its proper divisors (277659).

63531241 is a wasteful number, since it uses less digits than its factorization.

63531241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277658.

The product of its digits is 2160, while the sum is 25.

The square root of 63531241 is about 7970.6487188936. The cubic root of 63531241 is about 399.0210247232.

Adding to 63531241 its reverse (14213536), we get a palindrome (77744777).

The spelling of 63531241 in words is "sixty-three million, five hundred thirty-one thousand, two hundred forty-one".