155053836 has 144 divisors (see below), whose sum is σ = 473928000. Its totient is φ = 42674688.

The previous prime is 155053819. The next prime is 155053837. The reversal of 155053836 is 638350551.

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 155053836.

It is not an unprimeable number, because it can be changed into a prime (155053837) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 357876 + ... + 358308.

Almost surely, 2^155053836 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 155053836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236964000).

155053836 is an abundant number, since it is smaller than the sum of its proper divisors (318874164).

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

155053836 is a wasteful number, since it uses less digits than its factorization.

155053836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 155053836 is about 12452.0615160703. The cubic root of 155053836 is about 537.2307197048.

The spelling of 155053836 in words is "one hundred fifty-five million, fifty-three thousand, eight hundred thirty-six".