549621097 has 2 divisors, whose sum is σ = 549621098. Its totient is φ = 549621096.

The previous prime is 549621053. The next prime is 549621119. The reversal of 549621097 is 790126945.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372837481 + 176783616 = 19309^2 + 13296^2 .

It is a cyclic number.

It is not a de Polignac number, because 549621097 - 2¹⁵ = 549588329 is a prime.

It is not a weakly prime, because it can be changed into another prime (549621697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274810548 + 274810549.

It is an arithmetic number, because the mean of its divisors is an integer number (274810549).

Almost surely, 2^549621097 is an apocalyptic number.

It is an amenable number.

549621097 is a deficient number, since it is larger than the sum of its proper divisors (1).

549621097 is an equidigital number, since it uses as much as digits as its factorization.

549621097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 549621097 is about 23443.9991682307. Note that the first 3 decimals coincide. The cubic root of 549621097 is about 819.1330799314.

The spelling of 549621097 in words is "five hundred forty-nine million, six hundred twenty-one thousand, ninety-seven".