155513275 has 12 divisors (see below), whose sum is σ = 193081392. Its totient is φ = 124252640.

The previous prime is 155513273. The next prime is 155513291. The reversal of 155513275 is 572315551.

It is not a de Polignac number, because 155513275 - 2¹ = 155513273 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 155513275.

It is not an unprimeable number, because it can be changed into a prime (155513273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18669 + ... + 25681.

It is an arithmetic number, because the mean of its divisors is an integer number (16090116).

Almost surely, 2^155513275 is an apocalyptic number.

155513275 is a deficient number, since it is larger than the sum of its proper divisors (37568117).

155513275 is an equidigital number, since it uses as much as digits as its factorization.

155513275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7910 (or 7905 counting only the distinct ones).

The product of its digits is 26250, while the sum is 34.

The square root of 155513275 is about 12470.4961809865. The cubic root of 155513275 is about 537.7608180742.

The spelling of 155513275 in words is "one hundred fifty-five million, five hundred thirteen thousand, two hundred seventy-five".