261078103 has 16 divisors (see below), whose sum is σ = 308044800. Its totient is φ = 218141280.

The previous prime is 261078089. The next prime is 261078113. The reversal of 261078103 is 301870162.

It is a cyclic number.

It is not a de Polignac number, because 261078103 - 2⁵ = 261078071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261078113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30358 + ... + 37996.

It is an arithmetic number, because the mean of its divisors is an integer number (19252800).

Almost surely, 2^261078103 is an apocalyptic number.

261078103 is a deficient number, since it is larger than the sum of its proper divisors (46966697).

261078103 is a wasteful number, since it uses less digits than its factorization.

261078103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 261078103 is about 16157.9114677609. The cubic root of 261078103 is about 639.1313924606.

The spelling of 261078103 in words is "two hundred sixty-one million, seventy-eight thousand, one hundred three".