130520450 has 24 divisors (see below), whose sum is σ = 247353588. Its totient is φ = 51222080.

The previous prime is 130520431. The next prime is 130520459. The reversal of 130520450 is 54025031.

It can be written as a sum of positive squares in 6 ways, for example, as 34656769 + 95863681 = 5887^2 + 9791^2 .

It is not an unprimeable number, because it can be changed into a prime (130520459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21977 + ... + 27276.

Almost surely, 2^130520450 is an apocalyptic number.

130520450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130520450 is a deficient number, since it is larger than the sum of its proper divisors (116833138).

130520450 is a wasteful number, since it uses less digits than its factorization.

130520450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49318 (or 49313 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 130520450 is about 11424.5546959170. The cubic root of 130520450 is about 507.2548258833.

Adding to 130520450 its reverse (54025031), we get a palindrome (184545481).

The spelling of 130520450 in words is "one hundred thirty million, five hundred twenty thousand, four hundred fifty".