158775641 has 2 divisors, whose sum is σ = 158775642. Its totient is φ = 158775640.

The previous prime is 158775637. The next prime is 158775649. The reversal of 158775641 is 146577851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154281241 + 4494400 = 12421^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 158775641 - 2² = 158775637 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 158775592 and 158775601.

It is not a weakly prime, because it can be changed into another prime (158775649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79387820 + 79387821.

It is an arithmetic number, because the mean of its divisors is an integer number (79387821).

Almost surely, 2^158775641 is an apocalyptic number.

It is an amenable number.

158775641 is a deficient number, since it is larger than the sum of its proper divisors (1).

158775641 is an equidigital number, since it uses as much as digits as its factorization.

158775641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 44.

The square root of 158775641 is about 12600.6206593167. The cubic root of 158775641 is about 541.4952170385.

The spelling of 158775641 in words is "one hundred fifty-eight million, seven hundred seventy-five thousand, six hundred forty-one".