155241756 has 72 divisors (see below), whose sum is σ = 429876720. Its totient is φ = 47018496.

The previous prime is 155241719. The next prime is 155241763. The reversal of 155241756 is 657142551.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 155241756.

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 23 ways as a sum of consecutive naturals, for example, 13375 + ... + 22121.

It is an arithmetic number, because the mean of its divisors is an integer number (5970510).

Almost surely, 2^155241756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155241756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214938360).

155241756 is an abundant number, since it is smaller than the sum of its proper divisors (274634964).

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

155241756 is a wasteful number, since it uses less digits than its factorization.

155241756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8803 (or 8798 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 155241756 is about 12459.6049696610. The cubic root of 155241756 is about 537.4476672323.

The spelling of 155241756 in words is "one hundred fifty-five million, two hundred forty-one thousand, seven hundred fifty-six".