158228077 has 4 divisors (see below), whose sum is σ = 180832096. Its totient is φ = 135624060.

The previous prime is 158228053. The next prime is 158228093. The reversal of 158228077 is 770822851.

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 not a de Polignac number, because 158228077 - 2¹⁵ = 158195309 is a prime.

It is a super-2 number, since 2×158228077² = 50072248702235858, 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 (158228047) 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, 11301999 + ... + 11302012.

It is an arithmetic number, because the mean of its divisors is an integer number (45208024).

Almost surely, 2^158228077 is an apocalyptic number.

It is an amenable number.

158228077 is a deficient number, since it is larger than the sum of its proper divisors (22604019).

158228077 is an equidigital number, since it uses as much as digits as its factorization.

158228077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22604018.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 158228077 is about 12578.8742342071. The cubic root of 158228077 is about 540.8720215523.

The spelling of 158228077 in words is "one hundred fifty-eight million, two hundred twenty-eight thousand, seventy-seven".