5490021 has 8 divisors (see below), whose sum is σ = 7348320. Its totient is φ = 3645872.

The previous prime is 5490013. The next prime is 5490041. The reversal of 5490021 is 1200945.

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 5490021 - 2³ = 5490013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5490021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5490011) 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, 2595 + ... + 4208.

It is an arithmetic number, because the mean of its divisors is an integer number (918540).

Almost surely, 2^5490021 is an apocalyptic number.

It is an amenable number.

5490021 is a deficient number, since it is larger than the sum of its proper divisors (1858299).

5490021 is a wasteful number, since it uses less digits than its factorization.

5490021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 5490021 is about 2343.0793840585. The cubic root of 5490021 is about 176.4105965426.

Adding to 5490021 its reverse (1200945), we get a palindrome (6690966).

The spelling of 5490021 in words is "five million, four hundred ninety thousand, twenty-one".