155013165 has 48 divisors (see below), whose sum is σ = 278177328. Its totient is φ = 79792128.

The previous prime is 155013109. The next prime is 155013167. The reversal of 155013165 is 561310551.

155013165 = T₄₀₆ + T₄₀₇ + ... + T₉₉₈.

It can be written as a sum of positive squares in 8 ways, for example, as 1798281 + 153214884 = 1341^2 + 12378^2 .

It is not a de Polignac number, because 155013165 - 2⁶ = 155013101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155013167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261109 + ... + 261701.

It is an arithmetic number, because the mean of its divisors is an integer number (5795361).

Almost surely, 2^155013165 is an apocalyptic number.

155013165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155013165 is a deficient number, since it is larger than the sum of its proper divisors (123164163).

155013165 is a wasteful number, since it uses less digits than its factorization.

155013165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 155013165 is about 12450.4283058857. The cubic root of 155013165 is about 537.1837432871.

The spelling of 155013165 in words is "one hundred fifty-five million, thirteen thousand, one hundred sixty-five".