158221372 has 12 divisors (see below), whose sum is σ = 277273360. Its totient is φ = 79000416.

The previous prime is 158221369. The next prime is 158221387. The reversal of 158221372 is 273122851.

It is a congruent number.

It is an unprimeable number.

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, 24297 + ... + 30112.

Almost surely, 2^158221372 is an apocalyptic number.

It is an amenable number.

158221372 is a deficient number, since it is larger than the sum of its proper divisors (119051988).

158221372 is a wasteful number, since it uses less digits than its factorization.

158221372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55140 (or 55138 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 158221372 is about 12578.6077130977. The cubic root of 158221372 is about 540.8643815299.

The spelling of 158221372 in words is "one hundred fifty-eight million, two hundred twenty-one thousand, three hundred seventy-two".