155571852 has 12 divisors (see below), whose sum is σ = 363001016. Its totient is φ = 51857280.

The previous prime is 155571847. The next prime is 155571859. The reversal of 155571852 is 258175551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×155571852² = 48405202269419808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155571852.

It is not an unprimeable number, because it can be changed into a prime (155571859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6482149 + ... + 6482172.

Almost surely, 2^155571852 is an apocalyptic number.

155571852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155571852 is an abundant number, since it is smaller than the sum of its proper divisors (207429164).

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

155571852 is a wasteful number, since it uses less digits than its factorization.

155571852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12964328 (or 12964326 counting only the distinct ones).

The product of its digits is 70000, while the sum is 39.

The square root of 155571852 is about 12472.8445833338. The cubic root of 155571852 is about 537.8283288407.

The spelling of 155571852 in words is "one hundred fifty-five million, five hundred seventy-one thousand, eight hundred fifty-two".