261035355 has 32 divisors (see below), whose sum is σ = 483379200. Its totient is φ = 117816192.

The previous prime is 261035339. The next prime is 261035387. The reversal of 261035355 is 553530162.

It is not a de Polignac number, because 261035355 - 2⁴ = 261035339 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7440 + ... + 24029.

It is an arithmetic number, because the mean of its divisors is an integer number (15105600).

Almost surely, 2^261035355 is an apocalyptic number.

261035355 is a deficient number, since it is larger than the sum of its proper divisors (222343845).

261035355 is a wasteful number, since it uses less digits than its factorization.

261035355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31563.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 261035355 is about 16156.5885941309. The cubic root of 261035355 is about 639.0965075229.

The spelling of 261035355 in words is "two hundred sixty-one million, thirty-five thousand, three hundred fifty-five".