549560421 has 12 divisors (see below), whose sum is σ = 794232972. Its totient is φ = 366178176.

The previous prime is 549560399. The next prime is 549560437. The reversal of 549560421 is 124065945.

549560421 is a `hidden beast` number, since 5 + 49 + 5 + 604 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81703521 + 467856900 = 9039^2 + 21630^2 .

It is not a de Polignac number, because 549560421 - 2¹⁰ = 549559397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549560461) 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, 2685 + ... + 33261.

It is an arithmetic number, because the mean of its divisors is an integer number (66186081).

Almost surely, 2^549560421 is an apocalyptic number.

It is an amenable number.

549560421 is a deficient number, since it is larger than the sum of its proper divisors (244672551).

549560421 is a wasteful number, since it uses less digits than its factorization.

549560421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32580 (or 32577 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 549560421 is about 23442.7050700212. The cubic root of 549560421 is about 819.1029358023.

The spelling of 549560421 in words is "five hundred forty-nine million, five hundred sixty thousand, four hundred twenty-one".