130226521 has 4 divisors (see below), whose sum is σ = 132361444. Its totient is φ = 128091600.

The previous prime is 130226479. The next prime is 130226531. The reversal of 130226521 is 125622031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10017225 + 120209296 = 3165^2 + 10964^2 .

It is a cyclic number.

It is not a de Polignac number, because 130226521 - 2¹¹ = 130224473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130226492 and 130226501.

It is not an unprimeable number, because it can be changed into a prime (130226531) 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, 1067370 + ... + 1067491.

It is an arithmetic number, because the mean of its divisors is an integer number (33090361).

Almost surely, 2^130226521 is an apocalyptic number.

It is an amenable number.

130226521 is a deficient number, since it is larger than the sum of its proper divisors (2134923).

130226521 is an equidigital number, since it uses as much as digits as its factorization.

130226521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134922.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 130226521 is about 11411.6835304875. The cubic root of 130226521 is about 506.8737643591.

Adding to 130226521 its reverse (125622031), we get a palindrome (255848552).

The spelling of 130226521 in words is "one hundred thirty million, two hundred twenty-six thousand, five hundred twenty-one".