158321077 has 4 divisors (see below), whose sum is σ = 158409376. Its totient is φ = 158232780.

The previous prime is 158321071. The next prime is 158321117. The reversal of 158321077 is 770123851.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158321077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158321071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41403 + ... + 45064.

It is an arithmetic number, because the mean of its divisors is an integer number (39602344).

Almost surely, 2^158321077 is an apocalyptic number.

It is an amenable number.

158321077 is a deficient number, since it is larger than the sum of its proper divisors (88299).

158321077 is an equidigital number, since it uses as much as digits as its factorization.

158321077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88298.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 158321077 is about 12582.5703653904. The cubic root of 158321077 is about 540.9779682911.

The spelling of 158321077 in words is "one hundred fifty-eight million, three hundred twenty-one thousand, seventy-seven".