53838421 has 16 divisors (see below), whose sum is σ = 67110400. Its totient is φ = 42052608.

The previous prime is 53838403. The next prime is 53838427. The reversal of 53838421 is 12483835.

It is a happy number.

It is not a de Polignac number, because 53838421 - 2⁹ = 53837909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53838427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3445 + ... + 10933.

It is an arithmetic number, because the mean of its divisors is an integer number (4194400).

Almost surely, 2^53838421 is an apocalyptic number.

It is an amenable number.

53838421 is a deficient number, since it is larger than the sum of its proper divisors (13271979).

53838421 is a wasteful number, since it uses less digits than its factorization.

53838421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588.

The product of its digits is 23040, while the sum is 34.

The square root of 53838421 is about 7337.4669334860. The cubic root of 53838421 is about 377.5989442846.

The spelling of 53838421 in words is "fifty-three million, eight hundred thirty-eight thousand, four hundred twenty-one".