158228251 has 2 divisors, whose sum is σ = 158228252. Its totient is φ = 158228250.

The previous prime is 158228171. The next prime is 158228281. The reversal of 158228251 is 152822851.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158228251 - 2¹¹ = 158226203 is a prime.

It is not a weakly prime, because it can be changed into another prime (158228281) 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 as a sum of consecutive naturals, namely, 79114125 + 79114126.

It is an arithmetic number, because the mean of its divisors is an integer number (79114126).

Almost surely, 2^158228251 is an apocalyptic number.

158228251 is a deficient number, since it is larger than the sum of its proper divisors (1).

158228251 is an equidigital number, since it uses as much as digits as its factorization.

158228251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12800, while the sum is 34.

The square root of 158228251 is about 12578.8811505634. The cubic root of 158228251 is about 540.8722198140.

The spelling of 158228251 in words is "one hundred fifty-eight million, two hundred twenty-eight thousand, two hundred fifty-one".