158532069 has 4 divisors (see below), whose sum is σ = 211376096. Its totient is φ = 105688044.

The previous prime is 158532061. The next prime is 158532079. The reversal of 158532069 is 960235851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 158532069 - 2³ = 158532061 is a prime.

It is a super-2 number, since 2×158532069² = 50264833802841522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158532061) 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, 26422009 + ... + 26422014.

It is an arithmetic number, because the mean of its divisors is an integer number (52844024).

Almost surely, 2^158532069 is an apocalyptic number.

It is an amenable number.

158532069 is a deficient number, since it is larger than the sum of its proper divisors (52844027).

158532069 is an equidigital number, since it uses as much as digits as its factorization.

158532069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52844026.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 158532069 is about 12590.9518702916. The cubic root of 158532069 is about 541.2181792137.

The spelling of 158532069 in words is "one hundred fifty-eight million, five hundred thirty-two thousand, sixty-nine".