53889421 has 4 divisors (see below), whose sum is σ = 53984700. Its totient is φ = 53794144.

The previous prime is 53889419. The next prime is 53889461. The reversal of 53889421 is 12498835.

53889421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 33988900 = 4461^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 53889421 - 2¹ = 53889419 is a prime.

It is a super-3 number, since 3×53889421³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53889461) 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 3 ways as a sum of consecutive naturals, for example, 46786 + ... + 47923.

It is an arithmetic number, because the mean of its divisors is an integer number (13496175).

Almost surely, 2^53889421 is an apocalyptic number.

It is an amenable number.

53889421 is a deficient number, since it is larger than the sum of its proper divisors (95279).

53889421 is an equidigital number, since it uses as much as digits as its factorization.

53889421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95278.

The product of its digits is 69120, while the sum is 40.

The square root of 53889421 is about 7340.9414246403. The cubic root of 53889421 is about 377.7181371599.

The spelling of 53889421 in words is "fifty-three million, eight hundred eighty-nine thousand, four hundred twenty-one".