543172266 has 192 divisors, whose sum is σ = 1576673280. Its totient is φ = 131103360.

The previous prime is 543172261. The next prime is 543172277. The reversal of 543172266 is 662271345.

It is a super-2 number, since 2×543172266² = 590072221103149512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 543172266.

It is not an unprimeable number, because it can be changed into a prime (543172261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 964501 + ... + 965063.

It is an arithmetic number, because the mean of its divisors is an integer number (8211840).

Almost surely, 2^543172266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543172266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788336640).

543172266 is an abundant number, since it is smaller than the sum of its proper divisors (1033501014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

543172266 is a wasteful number, since it uses less digits than its factorization.

543172266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 638 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 543172266 is about 23306.0564231704. The cubic root of 543172266 is about 815.9167753212.

The spelling of 543172266 in words is "five hundred forty-three million, one hundred seventy-two thousand, two hundred sixty-six".