155513340 has 72 divisors (see below), whose sum is σ = 473578560. Its totient is φ = 41307264.

The previous prime is 155513299. The next prime is 155513357. The reversal of 155513340 is 43315551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48301 + ... + 51419.

It is an arithmetic number, because the mean of its divisors is an integer number (6577480).

Almost surely, 2^155513340 is an apocalyptic number.

155513340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155513340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236789280).

155513340 is an abundant number, since it is smaller than the sum of its proper divisors (318065220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155513340 is a wasteful number, since it uses less digits than its factorization.

155513340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411 (or 3406 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 155513340 is about 12470.4987871376. The cubic root of 155513340 is about 537.7608929969.

Adding to 155513340 its reverse (43315551), we get a palindrome (198828891).

The spelling of 155513340 in words is "one hundred fifty-five million, five hundred thirteen thousand, three hundred forty".