158391552 has 72 divisors (see below), whose sum is σ = 459900000. Its totient is φ = 47994880.

The previous prime is 158391529. The next prime is 158391587. The reversal of 158391552 is 255193851.

It is a self number, because there is not a number n which added to its sum of digits gives 158391552.

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 7 ways as a sum of consecutive naturals, for example, 927 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (6387500).

Almost surely, 2^158391552 is an apocalyptic number.

158391552 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 158391552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229950000).

158391552 is an abundant number, since it is smaller than the sum of its proper divisors (301508448).

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

158391552 is a wasteful number, since it uses less digits than its factorization.

158391552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18779 (or 18765 counting only the distinct ones).

The product of its digits is 54000, while the sum is 39.

The square root of 158391552 is about 12585.3705547354. The cubic root of 158391552 is about 541.0582266441.

It can be divided in two parts, 15839 and 1552, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 158391552 in words is "one hundred fifty-eight million, three hundred ninety-one thousand, five hundred fifty-two".