158272111 has 4 divisors (see below), whose sum is σ = 163729800. Its totient is φ = 152814424.

The previous prime is 158272097. The next prime is 158272117. The reversal of 158272111 is 111272851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158272111 - 2²⁷ = 24054383 is a prime.

It is a super-4 number, since 4×158272111⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158272111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158272117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2728801 + ... + 2728858.

It is an arithmetic number, because the mean of its divisors is an integer number (40932450).

Almost surely, 2^158272111 is an apocalyptic number.

158272111 is a deficient number, since it is larger than the sum of its proper divisors (5457689).

158272111 is an equidigital number, since it uses as much as digits as its factorization.

158272111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457688.

The product of its digits is 1120, while the sum is 28.

The square root of 158272111 is about 12580.6244280640. The cubic root of 158272111 is about 540.9221907975.

The spelling of 158272111 in words is "one hundred fifty-eight million, two hundred seventy-two thousand, one hundred eleven".