155755040 has 48 divisors (see below), whose sum is σ = 420541632. Its totient is φ = 53401344.

The previous prime is 155755031. The next prime is 155755081. The reversal of 155755040 is 40557551.

155755040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 155754988 and 155755006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68414 + ... + 70653.

It is an arithmetic number, because the mean of its divisors is an integer number (8761284).

Almost surely, 2^155755040 is an apocalyptic number.

155755040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155755040 is an abundant number, since it is smaller than the sum of its proper divisors (264786592).

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

155755040 is a wasteful number, since it uses less digits than its factorization.

155755040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139089 (or 139081 counting only the distinct ones).

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 155755040 is about 12480.1858960514. The cubic root of 155755040 is about 538.0393461271.

The spelling of 155755040 in words is "one hundred fifty-five million, seven hundred fifty-five thousand, forty".