53558421 has 64 divisors (see below), whose sum is σ = 90931200. Its totient is φ = 27941760.

The previous prime is 53558363. The next prime is 53558429. The reversal of 53558421 is 12485535.

53558421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53558421 - 2⁷ = 53558293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53558429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 733641 + ... + 733713.

It is an arithmetic number, because the mean of its divisors is an integer number (1420800).

Almost surely, 2^53558421 is an apocalyptic number.

It is an amenable number.

53558421 is a deficient number, since it is larger than the sum of its proper divisors (37372779).

53558421 is a wasteful number, since it uses less digits than its factorization.

53558421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 137 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 53558421 is about 7318.3619068751. The cubic root of 53558421 is about 376.9432073498.

The spelling of 53558421 in words is "fifty-three million, five hundred fifty-eight thousand, four hundred twenty-one".