5618121 has 8 divisors (see below), whose sum is σ = 7537440. Its totient is φ = 3722112.

The previous prime is 5618113. The next prime is 5618131. The reversal of 5618121 is 1218165.

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

It is not a de Polignac number, because 5618121 - 2³ = 5618113 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 5618091 and 5618100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5618111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5256 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (942180).

Almost surely, 2^5618121 is an apocalyptic number.

It is an amenable number.

5618121 is a deficient number, since it is larger than the sum of its proper divisors (1919319).

5618121 is a wasteful number, since it uses less digits than its factorization.

5618121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11655.

The product of its digits is 480, while the sum is 24.

The square root of 5618121 is about 2370.2575809393. The cubic root of 5618121 is about 177.7721382615.

The spelling of 5618121 in words is "five million, six hundred eighteen thousand, one hundred twenty-one".