261103575 has 24 divisors (see below), whose sum is σ = 432222336. Its totient is φ = 139084000.

The previous prime is 261103547. The next prime is 261103597. The reversal of 261103575 is 575301162.

It is not a de Polignac number, because 261103575 - 2⁵ = 261103543 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 80230 + ... + 83420.

It is an arithmetic number, because the mean of its divisors is an integer number (18009264).

Almost surely, 2^261103575 is an apocalyptic number.

261103575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

261103575 is a deficient number, since it is larger than the sum of its proper divisors (171118761).

261103575 is a wasteful number, since it uses less digits than its factorization.

261103575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 261103575 is about 16158.6996692184. The cubic root of 261103575 is about 639.1521773333.

The spelling of 261103575 in words is "two hundred sixty-one million, one hundred three thousand, five hundred seventy-five".