53221008 has 20 divisors (see below), whose sum is σ = 137487728. Its totient is φ = 17740320.

The previous prime is 53220997. The next prime is 53221013. The reversal of 53221008 is 80012235.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554338 + ... + 554433.

Almost surely, 2^53221008 is an apocalyptic number.

It is an amenable number.

53221008 is an abundant number, since it is smaller than the sum of its proper divisors (84266720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53221008 is a wasteful number, since it uses less digits than its factorization.

53221008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108782 (or 1108776 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 53221008 is about 7295.2729900943. The cubic root of 53221008 is about 376.1499703548.

The spelling of 53221008 in words is "fifty-three million, two hundred twenty-one thousand, eight".