549574249 has 27 divisors (see below), whose sum is σ = 682583493. Its totient is φ = 441103488.

The previous prime is 549574241. The next prime is 549574253. The reversal of 549574249 is 942475945.

It is a happy number.

The square root of 549574249 is 23443.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 357474649 + 192099600 = 18907^2 + 13860^2 .

It is not a de Polignac number, because 549574249 - 2³ = 549574241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549574241) 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 26 ways as a sum of consecutive naturals, for example, 2789619 + ... + 2789815.

Almost surely, 2^549574249 is an apocalyptic number.

549574249 is the 23443-rd square number.

549574249 is the 11722-nd centered octagonal number.

It is an amenable number.

549574249 is a deficient number, since it is larger than the sum of its proper divisors (133009244).

549574249 is an equidigital number, since it uses as much as digits as its factorization.

549574249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 221 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 49.

The cubic root of 549574249 is about 819.1098058145.

Multiplying 549574249 by its sum of digits (49), we get a square (26929138201 = 164101²).

549574249 divided by its sum of digits (49) gives a square (11215801 = 3349²).

The spelling of 549574249 in words is "five hundred forty-nine million, five hundred seventy-four thousand, two hundred forty-nine".