158561256 has 96 divisors (see below), whose sum is σ = 467691840. Its totient is φ = 44658432.

The previous prime is 158561239. The next prime is 158561257. The reversal of 158561256 is 652165851.

It is not an unprimeable number, because it can be changed into a prime (158561257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84925 + ... + 86771.

It is an arithmetic number, because the mean of its divisors is an integer number (4871790).

Almost surely, 2^158561256 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 158561256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233845920).

158561256 is an abundant number, since it is smaller than the sum of its proper divisors (309130584).

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

158561256 is a wasteful number, since it uses less digits than its factorization.

158561256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1932 counting only the distinct ones).

The product of its digits is 72000, while the sum is 39.

The square root of 158561256 is about 12592.1108635526. The cubic root of 158561256 is about 541.2513913492.

The spelling of 158561256 in words is "one hundred fifty-eight million, five hundred sixty-one thousand, two hundred fifty-six".