261066052 has 24 divisors (see below), whose sum is σ = 492462936. Its totient is φ = 120380928.

The previous prime is 261066041. The next prime is 261066053. The reversal of 261066052 is 250660162.

It can be written as a sum of positive squares in 4 ways, for example, as 695556 + 260370496 = 834^2 + 16136^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 261066052.

It is not an unprimeable number, because it can be changed into a prime (261066053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88668 + ... + 91564.

It is an arithmetic number, because the mean of its divisors is an integer number (20519289).

Almost surely, 2^261066052 is an apocalyptic number.

It is an amenable number.

261066052 is a deficient number, since it is larger than the sum of its proper divisors (231396884).

261066052 is a wasteful number, since it uses less digits than its factorization.

261066052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 261066052 is about 16157.5385501629. The cubic root of 261066052 is about 639.1215585056.

The spelling of 261066052 in words is "two hundred sixty-one million, sixty-six thousand, fifty-two".