549045 has 48 divisors (see below), whose sum is σ = 1149120. Its totient is φ = 247968.

The previous prime is 549037. The next prime is 549071. The reversal of 549045 is 540945.

549045 = T₇₁ + T₇₂ + ... + T₁₅₃.

549045 = 4³ + 5³ + ... + 38³.

It is not a de Polignac number, because 549045 - 2³ = 549037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6574 + ... + 6656.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2⁵⁴⁹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

549045 is an abundant number, since it is smaller than the sum of its proper divisors (600075).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549045 is a wasteful number, since it uses less digits than its factorization.

549045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 549045 is about 740.9757081038. The cubic root of 549045 is about 81.8846782646.

Subtracting from 549045 its reverse (540945), we obtain a square (8100 = 90²).

The spelling of 549045 in words is "five hundred forty-nine thousand, forty-five".