261063355 has 8 divisors (see below), whose sum is σ = 358029792. Its totient is φ = 179014848.

The previous prime is 261063353. The next prime is 261063367. The reversal of 261063355 is 553360162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261063355 - 2¹ = 261063353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261063353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3729442 + ... + 3729511.

It is an arithmetic number, because the mean of its divisors is an integer number (44753724).

Almost surely, 2^261063355 is an apocalyptic number.

261063355 is a deficient number, since it is larger than the sum of its proper divisors (96966437).

261063355 is an equidigital number, since it uses as much as digits as its factorization.

261063355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458965.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 261063355 is about 16157.4550904528. The cubic root of 261063355 is about 639.1193576363.

The spelling of 261063355 in words is "two hundred sixty-one million, sixty-three thousand, three hundred fifty-five".