63133021 has 6 divisors (see below), whose sum is σ = 73440510. Its totient is φ = 54113976.

The previous prime is 63132983. The next prime is 63133027. The reversal of 63133021 is 12033136.

It can be written as a sum of positive squares in only one way, i.e., 51984100 + 11148921 = 7210^2 + 3339^2 .

It is not a de Polignac number, because 63133021 - 2⁷ = 63132893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63133021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63133027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644166 + ... + 644263.

It is an arithmetic number, because the mean of its divisors is an integer number (12240085).

Almost surely, 2^63133021 is an apocalyptic number.

It is an amenable number.

63133021 is a deficient number, since it is larger than the sum of its proper divisors (10307489).

63133021 is a wasteful number, since it uses less digits than its factorization.

63133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288443 (or 1288436 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 63133021 is about 7945.6290499872. The cubic root of 63133021 is about 398.1855758570.

Adding to 63133021 its reverse (12033136), we get a palindrome (75166157).

The spelling of 63133021 in words is "sixty-three million, one hundred thirty-three thousand, twenty-one".