130557 has 8 divisors (see below), whose sum is σ = 198976. Its totient is φ = 74592.

The previous prime is 130553. The next prime is 130579. The reversal of 130557 is 755031.

It is a happy number.

130557 is nontrivially palindromic in base 4.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130557 - 2² = 130553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6217 = 130557 / (1 + 3 + 0 + 5 + 5 + 7).

It is a Duffinian number.

130557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3088 + ... + 3129.

It is an arithmetic number, because the mean of its divisors is an integer number (24872).

2¹³⁰⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

130557 is a deficient number, since it is larger than the sum of its proper divisors (68419).

130557 is an equidigital number, since it uses as much as digits as its factorization.

130557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6227.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 130557 is about 361.3267219567. The cubic root of 130557 is about 50.7302170785.

Adding to 130557 its reverse (755031), we get a palindrome (885588).

The spelling of 130557 in words is "one hundred thirty thousand, five hundred fifty-seven".