63536251 has 4 divisors (see below), whose sum is σ = 64301832. Its totient is φ = 62770672.

The previous prime is 63536233. The next prime is 63536269. The reversal of 63536251 is 15263536.

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

It is an interprime number because it is at equal distance from previous prime (63536233) and next prime (63536269).

It is a cyclic number.

It is not a de Polignac number, because 63536251 - 2⁵ = 63536219 is a prime.

It is a super-2 number, since 2×63536251² = 8073710382270002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63536201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382666 + ... + 382831.

It is an arithmetic number, because the mean of its divisors is an integer number (16075458).

Almost surely, 2^63536251 is an apocalyptic number.

63536251 is a deficient number, since it is larger than the sum of its proper divisors (765581).

63536251 is an equidigital number, since it uses as much as digits as its factorization.

63536251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765580.

The product of its digits is 16200, while the sum is 31.

The square root of 63536251 is about 7970.9629907559. The cubic root of 63536251 is about 399.0315132259.

Adding to 63536251 its reverse (15263536), we get a palindrome (78799787).

The spelling of 63536251 in words is "sixty-three million, five hundred thirty-six thousand, two hundred fifty-one".