158226559 has 4 divisors (see below), whose sum is σ = 158467320. Its totient is φ = 157985800.

The previous prime is 158226533. The next prime is 158226569. The reversal of 158226559 is 955622851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 955622851 = 191 ⋅5003261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158226559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158226529) 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, 119392 + ... + 120709.

It is an arithmetic number, because the mean of its divisors is an integer number (39616830).

Almost surely, 2^158226559 is an apocalyptic number.

158226559 is a deficient number, since it is larger than the sum of its proper divisors (240761).

158226559 is an equidigital number, since it uses as much as digits as its factorization.

158226559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240760.

The product of its digits is 216000, while the sum is 43.

The square root of 158226559 is about 12578.8138947995. The cubic root of 158226559 is about 540.8702918838.

The spelling of 158226559 in words is "one hundred fifty-eight million, two hundred twenty-six thousand, five hundred fifty-nine".