130621265 has 4 divisors (see below), whose sum is σ = 156745524. Its totient is φ = 104497008.

The previous prime is 130621261. The next prime is 130621273. The reversal of 130621265 is 562126031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562126031 = 41 ⋅13710391.

It can be written as a sum of positive squares in 2 ways, for example, as 58507201 + 72114064 = 7649^2 + 8492^2 .

It is a cyclic number.

It is not a de Polignac number, because 130621265 - 2² = 130621261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130621261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13062122 + ... + 13062131.

It is an arithmetic number, because the mean of its divisors is an integer number (39186381).

Almost surely, 2^130621265 is an apocalyptic number.

It is an amenable number.

130621265 is a deficient number, since it is larger than the sum of its proper divisors (26124259).

130621265 is an equidigital number, since it uses as much as digits as its factorization.

130621265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26124258.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 130621265 is about 11428.9660512227. The cubic root of 130621265 is about 507.3853947820.

Adding to 130621265 its reverse (562126031), we get a palindrome (692747296).

The spelling of 130621265 in words is "one hundred thirty million, six hundred twenty-one thousand, two hundred sixty-five".