63218051 has 16 divisors (see below), whose sum is σ = 69652128. Its totient is φ = 57024000.

The previous prime is 63218039. The next prime is 63218059. The reversal of 63218051 is 15081236.

It is a cyclic number.

It is not a de Polignac number, because 63218051 - 2¹⁰ = 63217027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63218051.

It is not an unprimeable number, because it can be changed into a prime (63218059) 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 in 15 ways as a sum of consecutive naturals, for example, 157451 + ... + 157851.

It is an arithmetic number, because the mean of its divisors is an integer number (4353258).

Almost surely, 2^63218051 is an apocalyptic number.

63218051 is a deficient number, since it is larger than the sum of its proper divisors (6434077).

63218051 is a wasteful number, since it uses less digits than its factorization.

63218051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 63218051 is about 7950.9779901594. The cubic root of 63218051 is about 398.3642595846.

Adding to 63218051 its reverse (15081236), we get a palindrome (78299287).

The spelling of 63218051 in words is "sixty-three million, two hundred eighteen thousand, fifty-one".