130621057 has 16 divisors (see below), whose sum is σ = 153217152. Its totient is φ = 109025280.

The previous prime is 130621033. The next prime is 130621061. The reversal of 130621057 is 750126031.

It is not a de Polignac number, because 130621057 - 2⁷ = 130620929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130621087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192603 + ... + 193279.

It is an arithmetic number, because the mean of its divisors is an integer number (9576072).

Almost surely, 2^130621057 is an apocalyptic number.

It is an amenable number.

130621057 is a deficient number, since it is larger than the sum of its proper divisors (22596095).

130621057 is an equidigital number, since it uses as much as digits as its factorization.

130621057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 130621057 is about 11428.9569515332. The cubic root of 130621057 is about 507.3851254634.

Adding to 130621057 its reverse (750126031), we get a palindrome (880747088).

The spelling of 130621057 in words is "one hundred thirty million, six hundred twenty-one thousand, fifty-seven".