158226881 has 2 divisors, whose sum is σ = 158226882. Its totient is φ = 158226880.

The previous prime is 158226877. The next prime is 158226899. The reversal of 158226881 is 188622851.

It is a happy number.

158226881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153983281 + 4243600 = 12409^2 + 2060^2 .

It is an emirp because it is prime and its reverse (188622851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158226881 - 2² = 158226877 is a prime.

It is a super-2 number, since 2×158226881² = 50071491741976322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158226841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79113440 + 79113441.

It is an arithmetic number, because the mean of its divisors is an integer number (79113441).

Almost surely, 2^158226881 is an apocalyptic number.

It is an amenable number.

158226881 is a deficient number, since it is larger than the sum of its proper divisors (1).

158226881 is an equidigital number, since it uses as much as digits as its factorization.

158226881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 41.

The square root of 158226881 is about 12578.8266940919. The cubic root of 158226881 is about 540.8706587841.

The spelling of 158226881 in words is "one hundred fifty-eight million, two hundred twenty-six thousand, eight hundred eighty-one".