155241440 has 24 divisors (see below), whose sum is σ = 366758280. Its totient is φ = 62096512.

The previous prime is 155241431. The next prime is 155241451. The reversal of 155241440 is 44142551.

155241440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484970 + ... + 485289.

It is an arithmetic number, because the mean of its divisors is an integer number (15281595).

Almost surely, 2^155241440 is an apocalyptic number.

155241440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155241440 is an abundant number, since it is smaller than the sum of its proper divisors (211516840).

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

155241440 is an equidigital number, since it uses as much as digits as its factorization.

155241440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970274 (or 970266 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 155241440 is about 12459.5922886746. The cubic root of 155241440 is about 537.4473025675.

Adding to 155241440 its reverse (44142551), we get a palindrome (199383991).

The spelling of 155241440 in words is "one hundred fifty-five million, two hundred forty-one thousand, four hundred forty".