261452355 has 16 divisors (see below), whose sum is σ = 419537664. Its totient is φ = 139036640.

The previous prime is 261452353. The next prime is 261452381. The reversal of 261452355 is 553254162.

It is not a de Polignac number, because 261452355 - 2¹ = 261452353 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (261452353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19911 + ... + 30320.

It is an arithmetic number, because the mean of its divisors is an integer number (26221104).

Almost surely, 2^261452355 is an apocalyptic number.

261452355 is a deficient number, since it is larger than the sum of its proper divisors (158085309).

261452355 is a wasteful number, since it uses less digits than its factorization.

261452355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50586.

The product of its digits is 36000, while the sum is 33.

The square root of 261452355 is about 16169.4883963594. The cubic root of 261452355 is about 639.4366421096.

The spelling of 261452355 in words is "two hundred sixty-one million, four hundred fifty-two thousand, three hundred fifty-five".