158533530 has 64 divisors (see below), whose sum is σ = 411384960. Its totient is φ = 38962944.

The previous prime is 158533513. The next prime is 158533537. The reversal of 158533530 is 35335851.

It is a happy number.

158533530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 158533491 and 158533500.

It is not an unprimeable number, because it can be changed into a prime (158533537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17332 + ... + 24848.

It is an arithmetic number, because the mean of its divisors is an integer number (6427890).

Almost surely, 2^158533530 is an apocalyptic number.

158533530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158533530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205692480).

158533530 is an abundant number, since it is smaller than the sum of its proper divisors (252851430).

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

158533530 is a wasteful number, since it uses less digits than its factorization.

158533530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 158533530 is about 12591.0098880114. The cubic root of 158533530 is about 541.2198417949.

The spelling of 158533530 in words is "one hundred fifty-eight million, five hundred thirty-three thousand, five hundred thirty".