155104040 has 64 divisors (see below), whose sum is σ = 429528960. Its totient is φ = 49086720.

The previous prime is 155104021. The next prime is 155104043. The reversal of 155104040 is 40401551.

155104040 is digitally balanced in base 2, 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 (20).

It is not an unprimeable number, because it can be changed into a prime (155104043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17666 + ... + 24945.

It is an arithmetic number, because the mean of its divisors is an integer number (6711390).

Almost surely, 2^155104040 is an apocalyptic number.

155104040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155104040 is an abundant number, since it is smaller than the sum of its proper divisors (274424920).

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

155104040 is a wasteful number, since it uses less digits than its factorization.

155104040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42642 (or 42638 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 155104040 is about 12454.0772440193. The cubic root of 155104040 is about 537.2886957414.

Adding to 155104040 its reverse (40401551), we get a palindrome (195505591).

The spelling of 155104040 in words is "one hundred fifty-five million, one hundred four thousand, forty".