155113040 has 80 divisors (see below), whose sum is σ = 375089088. Its totient is φ = 59609088.

The previous prime is 155113037. The next prime is 155113067. The reversal of 155113040 is 40311551.

155113040 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

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, 230144 + ... + 230816.

Almost surely, 2^155113040 is an apocalyptic number.

155113040 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 155113040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187544544).

155113040 is an abundant number, since it is smaller than the sum of its proper divisors (219976048).

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

155113040 is a wasteful number, since it uses less digits than its factorization.

155113040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 790 counting only the distinct ones).

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

The square root of 155113040 is about 12454.4385662301. The cubic root of 155113040 is about 537.2990877010.

Adding to 155113040 its reverse (40311551), we get a palindrome (195424591).

The spelling of 155113040 in words is "one hundred fifty-five million, one hundred thirteen thousand, forty".