549770121 has 12 divisors (see below), whose sum is σ = 794317680. Its totient is φ = 366418680.

The previous prime is 549770119. The next prime is 549770129. The reversal of 549770121 is 121077945.

It is a happy number.

It is not a de Polignac number, because 549770121 - 2¹ = 549770119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (549770129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56506 + ... + 65516.

It is an arithmetic number, because the mean of its divisors is an integer number (66193140).

Almost surely, 2^549770121 is an apocalyptic number.

It is an amenable number.

549770121 is a deficient number, since it is larger than the sum of its proper divisors (244547559).

549770121 is a wasteful number, since it uses less digits than its factorization.

549770121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796 (or 15793 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 549770121 is about 23447.1772501510. The cubic root of 549770121 is about 819.2071063578.

The spelling of 549770121 in words is "five hundred forty-nine million, seven hundred seventy thousand, one hundred twenty-one".