155819052 has 60 divisors (see below), whose sum is σ = 408531816. Its totient is φ = 51788160.

The previous prime is 155819039. The next prime is 155819087. The reversal of 155819052 is 250918551.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 155818998 and 155819016.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 191727 + ... + 192537.

Almost surely, 2^155819052 is an apocalyptic number.

155819052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155819052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204265908).

155819052 is an abundant number, since it is smaller than the sum of its proper divisors (252712764).

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

155819052 is a wasteful number, since it uses less digits than its factorization.

155819052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 36.

The square root of 155819052 is about 12482.7501777453. The cubic root of 155819052 is about 538.1130435979.

The spelling of 155819052 in words is "one hundred fifty-five million, eight hundred nineteen thousand, fifty-two".