1555150165 has 8 divisors (see below), whose sum is σ = 1896773688. Its totient is φ = 1223724480.

The previous prime is 1555150153. The next prime is 1555150187. The reversal of 1555150165 is 5610515551.

It can be written as a sum of positive squares in 4 ways, for example, as 241305156 + 1313845009 = 15534^2 + 36247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1555150165 - 2¹⁵ = 1555117397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1555150165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549122 + ... + 2549731.

It is an arithmetic number, because the mean of its divisors is an integer number (237096711).

Almost surely, 2^1555150165 is an apocalyptic number.

It is an amenable number.

1555150165 is a deficient number, since it is larger than the sum of its proper divisors (341623523).

1555150165 is an equidigital number, since it uses as much as digits as its factorization.

1555150165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098919.

The product of its (nonzero) digits is 18750, while the sum is 34.

The square root of 1555150165 is about 39435.3922891608. The cubic root of 1555150165 is about 1158.5748860953.

The spelling of 1555150165 in words is "one billion, five hundred fifty-five million, one hundred fifty thousand, one hundred sixty-five".