549241891 has 16 divisors (see below), whose sum is σ = 608832000. Its totient is φ = 491306400.

The previous prime is 549241883. The next prime is 549241907. The reversal of 549241891 is 198142945.

It is a cyclic number.

It is not a de Polignac number, because 549241891 - 2³ = 549241883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549241841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302376 + ... + 304186.

It is an arithmetic number, because the mean of its divisors is an integer number (38052000).

Almost surely, 2^549241891 is an apocalyptic number.

549241891 is a deficient number, since it is larger than the sum of its proper divisors (59590109).

549241891 is a wasteful number, since it uses less digits than its factorization.

549241891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250.

The product of its digits is 103680, while the sum is 43.

The square root of 549241891 is about 23435.9102874200. The cubic root of 549241891 is about 818.9446521555.

The spelling of 549241891 in words is "five hundred forty-nine million, two hundred forty-one thousand, eight hundred ninety-one".