158221063 has 32 divisors (see below), whose sum is σ = 213599232. Its totient is φ = 113184000.

The previous prime is 158221061. The next prime is 158221069. The reversal of 158221063 is 360122851.

It is a cyclic number.

It is not a de Polignac number, because 158221063 - 2¹ = 158221061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262963 + ... + 263563.

It is an arithmetic number, because the mean of its divisors is an integer number (6674976).

Almost surely, 2^158221063 is an apocalyptic number.

158221063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

158221063 is a deficient number, since it is larger than the sum of its proper divisors (55378169).

158221063 is a wasteful number, since it uses less digits than its factorization.

158221063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 158221063 is about 12578.5954303332. The cubic root of 158221063 is about 540.8640294342.

The spelling of 158221063 in words is "one hundred fifty-eight million, two hundred twenty-one thousand, sixty-three".