130021653 has 4 divisors (see below), whose sum is σ = 173362208. Its totient is φ = 86681100.

The previous prime is 130021651. The next prime is 130021679. The reversal of 130021653 is 356120031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356120031 = 3 ⋅118706677.

It is not a de Polignac number, because 130021653 - 2¹ = 130021651 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130021651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21670273 + ... + 21670278.

It is an arithmetic number, because the mean of its divisors is an integer number (43340552).

Almost surely, 2^130021653 is an apocalyptic number.

It is an amenable number.

130021653 is a deficient number, since it is larger than the sum of its proper divisors (43340555).

130021653 is an equidigital number, since it uses as much as digits as its factorization.

130021653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43340554.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 130021653 is about 11402.7037583198. The cubic root of 130021653 is about 506.6078259135.

Adding to 130021653 its reverse (356120031), we get a palindrome (486141684).

The spelling of 130021653 in words is "one hundred thirty million, twenty-one thousand, six hundred fifty-three".