130001555 has 4 divisors (see below), whose sum is σ = 156001872. Its totient is φ = 104001240.

The previous prime is 130001503. The next prime is 130001561. The reversal of 130001555 is 555100031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 130001555 - 2⁶ = 130001491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13000151 + ... + 13000160.

It is an arithmetic number, because the mean of its divisors is an integer number (39000468).

Almost surely, 2^130001555 is an apocalyptic number.

130001555 is a deficient number, since it is larger than the sum of its proper divisors (26000317).

130001555 is an equidigital number, since it uses as much as digits as its factorization.

130001555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26000316.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 130001555 is about 11401.8224420485. The cubic root of 130001555 is about 506.5817217262.

Adding to 130001555 its reverse (555100031), we get a palindrome (685101586).

The spelling of 130001555 in words is "one hundred thirty million, one thousand, five hundred fifty-five".