549012857 has 4 divisors (see below), whose sum is σ = 549315840. Its totient is φ = 548709876.

The previous prime is 549012853. The next prime is 549012859. The reversal of 549012857 is 758210945.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 549012857 - 2² = 549012853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549012853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148757 + ... + 152402.

It is an arithmetic number, because the mean of its divisors is an integer number (137328960).

Almost surely, 2^549012857 is an apocalyptic number.

It is an amenable number.

549012857 is a deficient number, since it is larger than the sum of its proper divisors (302983).

549012857 is a wasteful number, since it uses less digits than its factorization.

549012857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302982.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 549012857 is about 23431.0233878079. The cubic root of 549012857 is about 818.8308029570.

The spelling of 549012857 in words is "five hundred forty-nine million, twelve thousand, eight hundred fifty-seven".