549853897 has 2 divisors, whose sum is σ = 549853898. Its totient is φ = 549853896.

The previous prime is 549853883. The next prime is 549853921. The reversal of 549853897 is 798358945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525143056 + 24710841 = 22916^2 + 4971^2 .

It is a cyclic number.

It is not a de Polignac number, because 549853897 - 2¹⁹ = 549329609 is a prime.

It is not a weakly prime, because it can be changed into another prime (549853807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274926948 + 274926949.

It is an arithmetic number, because the mean of its divisors is an integer number (274926949).

Almost surely, 2^549853897 is an apocalyptic number.

It is an amenable number.

549853897 is a deficient number, since it is larger than the sum of its proper divisors (1).

549853897 is an equidigital number, since it uses as much as digits as its factorization.

549853897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 58.

The square root of 549853897 is about 23448.9636657998. The cubic root of 549853897 is about 819.2487155117.

It can be divided in two parts, 5498 and 53897, that added together give a palindrome (59395).

The spelling of 549853897 in words is "five hundred forty-nine million, eight hundred fifty-three thousand, eight hundred ninety-seven".