5481921 has 4 divisors (see below), whose sum is σ = 7309232. Its totient is φ = 3654612.

The previous prime is 5481913. The next prime is 5481961. The reversal of 5481921 is 1291845.

It is a happy number.

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 not a de Polignac number, because 5481921 - 2³ = 5481913 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5481961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913651 + ... + 913656.

It is an arithmetic number, because the mean of its divisors is an integer number (1827308).

Almost surely, 2^5481921 is an apocalyptic number.

It is an amenable number.

5481921 is a deficient number, since it is larger than the sum of its proper divisors (1827311).

5481921 is a wasteful number, since it uses less digits than its factorization.

5481921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827310.

The product of its digits is 2880, while the sum is 30.

The square root of 5481921 is about 2341.3502514575. The cubic root of 5481921 is about 176.3237948615.

The spelling of 5481921 in words is "five million, four hundred eighty-one thousand, nine hundred twenty-one".