130521650 has 48 divisors (see below), whose sum is σ = 280857024. Its totient is φ = 44201280.

The previous prime is 130521613. The next prime is 130521653. The reversal of 130521650 is 56125031.

130521650 = 6595² + 6596² + 6597².

It is a super-2 number, since 2×130521650² = 34071802237445000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130521653) 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, 26804 + ... + 31296.

It is an arithmetic number, because the mean of its divisors is an integer number (5851188).

Almost surely, 2^130521650 is an apocalyptic number.

130521650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130521650 is an abundant number, since it is smaller than the sum of its proper divisors (150335374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130521650 is a wasteful number, since it uses less digits than its factorization.

130521650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595 (or 4590 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 130521650 is about 11424.6072142547. The cubic root of 130521650 is about 507.2563804390.

Adding to 130521650 its reverse (56125031), we get a palindrome (186646681).

The spelling of 130521650 in words is "one hundred thirty million, five hundred twenty-one thousand, six hundred fifty".