155011340 has 48 divisors (see below), whose sum is σ = 356257440. Its totient is φ = 56186880.

The previous prime is 155011333. The next prime is 155011387. The reversal of 155011340 is 43110551.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81116 + ... + 83004.

It is an arithmetic number, because the mean of its divisors is an integer number (7422030).

Almost surely, 2^155011340 is an apocalyptic number.

155011340 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 155011340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178128720).

155011340 is an abundant number, since it is smaller than the sum of its proper divisors (201246100).

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

155011340 is a wasteful number, since it uses less digits than its factorization.

155011340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 155011340 is about 12450.3550150186. The cubic root of 155011340 is about 537.1816351561.

Adding to 155011340 its reverse (43110551), we get a palindrome (198121891).

The spelling of 155011340 in words is "one hundred fifty-five million, eleven thousand, three hundred forty".