130005261 has 24 divisors (see below), whose sum is σ = 192903360. Its totient is φ = 84338496.

The previous prime is 130005233. The next prime is 130005283. The reversal of 130005261 is 162500031.

It is not a de Polignac number, because 130005261 - 2⁵ = 130005229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130005461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53505 + ... + 55881.

It is an arithmetic number, because the mean of its divisors is an integer number (8037640).

Almost surely, 2^130005261 is an apocalyptic number.

It is an amenable number.

130005261 is a deficient number, since it is larger than the sum of its proper divisors (62898099).

130005261 is a wasteful number, since it uses less digits than its factorization.

130005261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545 (or 2542 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 130005261 is about 11401.9849587692. The cubic root of 130005261 is about 506.5865354482.

Adding to 130005261 its reverse (162500031), we get a palindrome (292505292).

The spelling of 130005261 in words is "one hundred thirty million, five thousand, two hundred sixty-one".