549621136 has 15 divisors (see below), whose sum is σ = 1065072673. Its totient is φ = 274763680.

The previous prime is 549621131. The next prime is 549621143. The reversal of 549621136 is 631126945.

The square root of 549621136 is 23444.

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

It can be written as a sum of positive squares in only one way, i.e., 248251536 + 301369600 = 15756^2 + 17360^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 549621095 and 549621104.

It is not an unprimeable number, because it can be changed into a prime (549621131) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 90846 + ... + 96706.

Almost surely, 2^549621136 is an apocalyptic number.

549621136 is the 23444-th square number.

It is an amenable number.

549621136 is a deficient number, since it is larger than the sum of its proper divisors (515451537).

549621136 is an frugal number, since it uses more digits than its factorization.

549621136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11730 (or 5863 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The cubic root of 549621136 is about 819.1330993060.

The spelling of 549621136 in words is "five hundred forty-nine million, six hundred twenty-one thousand, one hundred thirty-six".