155041840 has 40 divisors (see below), whose sum is σ = 370221840. Its totient is φ = 60339456.

The previous prime is 155041837. The next prime is 155041841. The reversal of 155041840 is 48140551.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 155041799 and 155041808.

It is not an unprimeable number, because it can be changed into a prime (155041841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23230 + ... + 29149.

It is an arithmetic number, because the mean of its divisors is an integer number (9255546).

Almost surely, 2^155041840 is an apocalyptic number.

155041840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155041840 is an abundant number, since it is smaller than the sum of its proper divisors (215180000).

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

155041840 is a wasteful number, since it uses less digits than its factorization.

155041840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52429 (or 52423 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 155041840 is about 12451.5798194446. The cubic root of 155041840 is about 537.2168647623.

The spelling of 155041840 in words is "one hundred fifty-five million, forty-one thousand, eight hundred forty".