53537421 has 32 divisors (see below), whose sum is σ = 86732800. Its totient is φ = 28693440.

The previous prime is 53537411. The next prime is 53537441. The reversal of 53537421 is 12473535.

53537421 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 53537421 - 2⁶ = 53537357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53537401) 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 31 ways as a sum of consecutive naturals, for example, 42876 + ... + 44106.

It is an arithmetic number, because the mean of its divisors is an integer number (2710400).

Almost surely, 2^53537421 is an apocalyptic number.

It is an amenable number.

53537421 is a deficient number, since it is larger than the sum of its proper divisors (33195379).

53537421 is a wasteful number, since it uses less digits than its factorization.

53537421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 12600, while the sum is 30.

The square root of 53537421 is about 7316.9270189062. The cubic root of 53537421 is about 376.8939350348.

The spelling of 53537421 in words is "fifty-three million, five hundred thirty-seven thousand, four hundred twenty-one".