8055421 has 4 divisors (see below), whose sum is σ = 8787744. Its totient is φ = 7323100.

The previous prime is 8055413. The next prime is 8055461. The reversal of 8055421 is 1245508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8055421 - 2³ = 8055413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8055461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366145 + ... + 366166.

It is an arithmetic number, because the mean of its divisors is an integer number (2196936).

Almost surely, 2^8055421 is an apocalyptic number.

It is an amenable number.

8055421 is a deficient number, since it is larger than the sum of its proper divisors (732323).

8055421 is a wasteful number, since it uses less digits than its factorization.

8055421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732322.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 8055421 is about 2838.2073567659. The cubic root of 8055421 is about 200.4607792638.

It can be divided in two parts, 805 and 5421, that added together give a palindrome (6226).

The spelling of 8055421 in words is "eight million, fifty-five thousand, four hundred twenty-one".