158557222 has 8 divisors (see below), whose sum is σ = 238714272. Its totient is φ = 78985800.

The previous prime is 158557207. The next prime is 158557229. The reversal of 158557222 is 222755851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158557229) 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 3 ways as a sum of consecutive naturals, for example, 145729 + ... + 146812.

It is an arithmetic number, because the mean of its divisors is an integer number (29839284).

Almost surely, 2^158557222 is an apocalyptic number.

158557222 is a deficient number, since it is larger than the sum of its proper divisors (80157050).

158557222 is a wasteful number, since it uses less digits than its factorization.

158557222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292814.

The product of its digits is 56000, while the sum is 37.

The square root of 158557222 is about 12591.9506828767. The cubic root of 158557222 is about 541.2468012690.

The spelling of 158557222 in words is "one hundred fifty-eight million, five hundred fifty-seven thousand, two hundred twenty-two".