54105421 has 8 divisors (see below), whose sum is σ = 55344384. Its totient is φ = 52874640.

The previous prime is 54105409. The next prime is 54105437. The reversal of 54105421 is 12450145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54105421 - 2⁹ = 54104909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54105392 and 54105401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54105461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12480 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (6918048).

Almost surely, 2^54105421 is an apocalyptic number.

It is an amenable number.

54105421 is a deficient number, since it is larger than the sum of its proper divisors (1238963).

54105421 is a wasteful number, since it uses less digits than its factorization.

54105421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 54105421 is about 7355.6387214164. The cubic root of 54105421 is about 378.2221220000. Note that the first 3 decimals are identical.

Adding to 54105421 its reverse (12450145), we get a palindrome (66555566).

The spelling of 54105421 in words is "fifty-four million, one hundred five thousand, four hundred twenty-one".