5172261066 has 48 divisors (see below), whose sum is σ = 12889129344. Its totient is φ = 1468370592.

The previous prime is 5172261053. The next prime is 5172261071. The reversal of 5172261066 is 6601622715.

It is a happy number.

5172261066 is a `hidden beast` number, since 5 + 17 + 22 + 610 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5172261066.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110950 + ... + 150513.

It is an arithmetic number, because the mean of its divisors is an integer number (268523528).

Almost surely, 2^5172261066 is an apocalyptic number.

5172261066 is an abundant number, since it is smaller than the sum of its proper divisors (7716868278).

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

5172261066 is a wasteful number, since it uses less digits than its factorization.

5172261066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261635 (or 261632 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 5172261066 is about 71918.4334228715. The cubic root of 5172261066 is about 1729.3921334392.

The spelling of 5172261066 in words is "five billion, one hundred seventy-two million, two hundred sixty-one thousand, sixty-six".