549451 has 8 divisors (see below), whose sum is σ = 640224. Its totient is φ = 461760.

The previous prime is 549449. The next prime is 549481. The reversal of 549451 is 154945.

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 549451 - 2¹ = 549449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549421) 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, 370 + ... + 1111.

It is an arithmetic number, because the mean of its divisors is an integer number (80028).

2⁵⁴⁹⁴⁵¹ is an apocalyptic number.

549451 is the 371-st decagonal number.

549451 is a deficient number, since it is larger than the sum of its proper divisors (90773).

549451 is a wasteful number, since it uses less digits than its factorization.

549451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541.

The product of its digits is 3600, while the sum is 28.

The square root of 549451 is about 741.2496205733. The cubic root of 549451 is about 81.9048569313.

It can be divided in two parts, 54945 and 1, that added together give a triangular number (54946 = T₃₃₁).

The spelling of 549451 in words is "five hundred forty-nine thousand, four hundred fifty-one".