130021559 has 4 divisors (see below), whose sum is σ = 137669904. Its totient is φ = 122373216.

The previous prime is 130021547. The next prime is 130021571. The reversal of 130021559 is 955120031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955120031 = 20323 ⋅46997.

It is an interprime number because it is at equal distance from previous prime (130021547) and next prime (130021571).

It is a cyclic number.

It is not a de Polignac number, because 130021559 - 2¹⁶ = 129956023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130021259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3824147 + ... + 3824180.

It is an arithmetic number, because the mean of its divisors is an integer number (34417476).

Almost surely, 2^130021559 is an apocalyptic number.

130021559 is a deficient number, since it is larger than the sum of its proper divisors (7648345).

130021559 is an equidigital number, since it uses as much as digits as its factorization.

130021559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648344.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 130021559 is about 11402.6996364896. The cubic root of 130021559 is about 506.6077038284.

The spelling of 130021559 in words is "one hundred thirty million, twenty-one thousand, five hundred fifty-nine".