53221456 has 20 divisors (see below), whose sum is σ = 103754272. Its totient is φ = 26446176.

The previous prime is 53221417. The next prime is 53221477. The reversal of 53221456 is 65412235.

It is a congruent number.

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, 7596 + ... + 12811.

Almost surely, 2^53221456 is an apocalyptic number.

It is an amenable number.

53221456 is a deficient number, since it is larger than the sum of its proper divisors (50532816).

53221456 is a wasteful number, since it uses less digits than its factorization.

53221456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20578 (or 20572 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 53221456 is about 7295.3036948437. The cubic root of 53221456 is about 376.1510257947.

The spelling of 53221456 in words is "fifty-three million, two hundred twenty-one thousand, four hundred fifty-six".