5263631221 has 8 divisors (see below), whose sum is σ = 5378522688. Its totient is φ = 5149872000.

The previous prime is 5263631207. The next prime is 5263631279. The reversal of 5263631221 is 1221363625.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5263631221 - 2¹⁵ = 5263598453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5263637221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273660 + ... + 292261.

It is an arithmetic number, because the mean of its divisors is an integer number (672315336).

Almost surely, 2^5263631221 is an apocalyptic number.

It is an amenable number.

5263631221 is a deficient number, since it is larger than the sum of its proper divisors (114891467).

5263631221 is a wasteful number, since it uses less digits than its factorization.

5263631221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566123.

The product of its digits is 12960, while the sum is 31.

The square root of 5263631221 is about 72550.8871138045. The cubic root of 5263631221 is about 1739.5162284153.

Adding to 5263631221 its reverse (1221363625), we get a palindrome (6484994846).

The spelling of 5263631221 in words is "five billion, two hundred sixty-three million, six hundred thirty-one thousand, two hundred twenty-one".