10158161 has 4 divisors (see below), whose sum is σ = 10939572. Its totient is φ = 9376752.

The previous prime is 10158151. The next prime is 10158167. The reversal of 10158161 is 16185101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 819025 + 9339136 = 905^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 10158161 - 2⁶ = 10158097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10158167) 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, 390686 + ... + 390711.

It is an arithmetic number, because the mean of its divisors is an integer number (2734893).

Almost surely, 2^10158161 is an apocalyptic number.

It is an amenable number.

10158161 is a deficient number, since it is larger than the sum of its proper divisors (781411).

10158161 is an equidigital number, since it uses as much as digits as its factorization.

10158161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781410.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 10158161 is about 3187.1870042406. The cubic root of 10158161 is about 216.5733581126.

The spelling of 10158161 in words is "ten million, one hundred fifty-eight thousand, one hundred sixty-one".