261841102 has 4 divisors (see below), whose sum is σ = 392761656. Its totient is φ = 130920550.

The previous prime is 261841079. The next prime is 261841117. The reversal of 261841102 is 201148162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201148162 = 2 ⋅100574081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65460274 + ... + 65460277.

It is an arithmetic number, because the mean of its divisors is an integer number (98190414).

Almost surely, 2^261841102 is an apocalyptic number.

261841102 is a deficient number, since it is larger than the sum of its proper divisors (130920554).

261841102 is a wasteful number, since it uses less digits than its factorization.

261841102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130920553.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 261841102 is about 16181.5049361918. The cubic root of 261841102 is about 639.7534059753.

Adding to 261841102 its reverse (201148162), we get a palindrome (462989264).

The spelling of 261841102 in words is "two hundred sixty-one million, eight hundred forty-one thousand, one hundred two".