5545921 has 4 divisors (see below), whose sum is σ = 5787072. Its totient is φ = 5304772.

The previous prime is 5545913. The next prime is 5545933. The reversal of 5545921 is 1295455.

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 5545921 - 2³ = 5545913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5545901) 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, 120541 + ... + 120586.

It is an arithmetic number, because the mean of its divisors is an integer number (1446768).

Almost surely, 2^5545921 is an apocalyptic number.

It is an amenable number.

5545921 is a deficient number, since it is larger than the sum of its proper divisors (241151).

5545921 is a wasteful number, since it uses less digits than its factorization.

5545921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241150.

The product of its digits is 9000, while the sum is 31.

The square root of 5545921 is about 2354.9779192171. The cubic root of 5545921 is about 177.0073198586.

The spelling of 5545921 in words is "five million, five hundred forty-five thousand, nine hundred twenty-one".