158622401 has 8 divisors (see below), whose sum is σ = 181974144. Its totient is φ = 135443520.

The previous prime is 158622397. The next prime is 158622403. The reversal of 158622401 is 104226851.

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

It is a cyclic number.

It is not a de Polignac number, because 158622401 - 2² = 158622397 is a prime.

It is a super-2 number, since 2×158622401² = 50322132198009602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158622403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41240 + ... + 44921.

It is an arithmetic number, because the mean of its divisors is an integer number (22746768).

Almost surely, 2^158622401 is an apocalyptic number.

It is an amenable number.

158622401 is a deficient number, since it is larger than the sum of its proper divisors (23351743).

158622401 is an equidigital number, since it uses as much as digits as its factorization.

158622401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86431.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 158622401 is about 12594.5385385889. The cubic root of 158622401 is about 541.3209555542.

The spelling of 158622401 in words is "one hundred fifty-eight million, six hundred twenty-two thousand, four hundred one".