130520457 has 32 divisors (see below), whose sum is σ = 199004160. Its totient is φ = 84505680.

The previous prime is 130520431. The next prime is 130520459. The reversal of 130520457 is 754025031.

It is a happy number.

130520457 is a `hidden beast` number, since 130 + 520 + 4 + 5 + 7 = 666.

It is not a de Polignac number, because 130520457 - 2²² = 126326153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 130520457.

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 31 ways as a sum of consecutive naturals, for example, 206532 + ... + 207162.

It is an arithmetic number, because the mean of its divisors is an integer number (6218880).

Almost surely, 2^130520457 is an apocalyptic number.

It is an amenable number.

130520457 is a deficient number, since it is larger than the sum of its proper divisors (68483703).

130520457 is a wasteful number, since it uses less digits than its factorization.

130520457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 130520457 is about 11424.5550022747. Note that the first 3 decimals coincide. The cubic root of 130520457 is about 507.2548349516.

Adding to 130520457 its reverse (754025031), we get a palindrome (884545488).

The spelling of 130520457 in words is "one hundred thirty million, five hundred twenty thousand, four hundred fifty-seven".