549897121 has 8 divisors (see below), whose sum is σ = 555910784. Its totient is φ = 543896640.

The previous prime is 549897083. The next prime is 549897143. The reversal of 549897121 is 121798945.

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 549897121 - 2²¹ = 547799969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549897191) 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, 96841 + ... + 102361.

It is an arithmetic number, because the mean of its divisors is an integer number (69488848).

Almost surely, 2^549897121 is an apocalyptic number.

It is an amenable number.

549897121 is a deficient number, since it is larger than the sum of its proper divisors (6013663).

549897121 is a wasteful number, since it uses less digits than its factorization.

549897121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591.

The product of its digits is 181440, while the sum is 46.

The square root of 549897121 is about 23449.8853088880. The cubic root of 549897121 is about 819.2701819890.

The spelling of 549897121 in words is "five hundred forty-nine million, eight hundred ninety-seven thousand, one hundred twenty-one".