261641301 has 16 divisors (see below), whose sum is σ = 353298624. Its totient is φ = 172214784.

The previous prime is 261641297. The next prime is 261641309. The reversal of 261641301 is 103146162.

261641301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261641301 - 2² = 261641297 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261641309) 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, 163035 + ... + 164631.

It is an arithmetic number, because the mean of its divisors is an integer number (22081164).

Almost surely, 2^261641301 is an apocalyptic number.

It is an amenable number.

261641301 is a deficient number, since it is larger than the sum of its proper divisors (91657323).

261641301 is a wasteful number, since it uses less digits than its factorization.

261641301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 261641301 is about 16175.3300120894. The cubic root of 261641301 is about 639.5906407264.

Adding to 261641301 its reverse (103146162), we get a palindrome (364787463).

The spelling of 261641301 in words is "two hundred sixty-one million, six hundred forty-one thousand, three hundred one".