1555130105 has 4 divisors (see below), whose sum is σ = 1866156132. Its totient is φ = 1244104080.

The previous prime is 1555130053. The next prime is 1555130149. The reversal of 1555130105 is 5010315551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 271986064 + 1283144041 = 16492^2 + 35821^2 .

It is not a de Polignac number, because 1555130105 - 2²² = 1550935801 is a prime.

It is a super-2 number, since 2×1555130105² = 4836859286954622050, which contains 22 as substring.

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, 155513006 + ... + 155513015.

It is an arithmetic number, because the mean of its divisors is an integer number (466539033).

Almost surely, 2^1555130105 is an apocalyptic number.

It is an amenable number.

1555130105 is a deficient number, since it is larger than the sum of its proper divisors (311026027).

1555130105 is an equidigital number, since it uses as much as digits as its factorization.

1555130105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311026026.

The product of its (nonzero) digits is 1875, while the sum is 26.

The square root of 1555130105 is about 39435.1379482816. The cubic root of 1555130105 is about 1158.5699045588.

Adding to 1555130105 its reverse (5010315551), we get a palindrome (6565445656).

The spelling of 1555130105 in words is "one billion, five hundred fifty-five million, one hundred thirty thousand, one hundred five".