53421566 has 32 divisors (see below), whose sum is σ = 90288000. Its totient is φ = 23496480.

The previous prime is 53421553. The next prime is 53421583. The reversal of 53421566 is 66512435.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140765 + ... + 141143.

It is an arithmetic number, because the mean of its divisors is an integer number (2821500).

Almost surely, 2^53421566 is an apocalyptic number.

53421566 is a deficient number, since it is larger than the sum of its proper divisors (36866434).

53421566 is a wasteful number, since it uses less digits than its factorization.

53421566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584.

The product of its digits is 21600, while the sum is 32.

The square root of 53421566 is about 7309.0058147466. The cubic root of 53421566 is about 376.6218724849.

The spelling of 53421566 in words is "fifty-three million, four hundred twenty-one thousand, five hundred sixty-six".