158644241 has 4 divisors (see below), whose sum is σ = 181307712. Its totient is φ = 135980772.

The previous prime is 158644231. The next prime is 158644249. The reversal of 158644241 is 142446851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158644241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158644249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11331725 + ... + 11331738.

It is an arithmetic number, because the mean of its divisors is an integer number (45326928).

Almost surely, 2^158644241 is an apocalyptic number.

It is an amenable number.

158644241 is a deficient number, since it is larger than the sum of its proper divisors (22663471).

158644241 is an equidigital number, since it uses as much as digits as its factorization.

158644241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22663470.

The product of its digits is 30720, while the sum is 35.

The square root of 158644241 is about 12595.4055512318. The cubic root of 158644241 is about 541.3457984243.

The spelling of 158644241 in words is "one hundred fifty-eight million, six hundred forty-four thousand, two hundred forty-one".