549916197 has 16 divisors (see below), whose sum is σ = 739377600. Its totient is φ = 363543552.

The previous prime is 549916193. The next prime is 549916201. The reversal of 549916197 is 791619945.

It is an interprime number because it is at equal distance from previous prime (549916193) and next prime (549916201).

It is not a de Polignac number, because 549916197 - 2² = 549916193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549916193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281179 + ... + 283127.

It is an arithmetic number, because the mean of its divisors is an integer number (46211100).

Almost surely, 2^549916197 is an apocalyptic number.

It is an amenable number.

549916197 is a deficient number, since it is larger than the sum of its proper divisors (189461403).

549916197 is a wasteful number, since it uses less digits than its factorization.

549916197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692.

The product of its digits is 612360, while the sum is 51.

The square root of 549916197 is about 23450.2920450898. The cubic root of 549916197 is about 819.2796554079.

The spelling of 549916197 in words is "five hundred forty-nine million, nine hundred sixteen thousand, one hundred ninety-seven".