161151005 has 8 divisors (see below), whose sum is σ = 197030232. Its totient is φ = 126488128.

The previous prime is 161150987. The next prime is 161151017. The reversal of 161151005 is 500151161.

It can be written as a sum of positive squares in 4 ways, for example, as 47045881 + 114105124 = 6859^2 + 10682^2 .

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 161151005 - 2⁸ = 161150749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303794 + ... + 304323.

It is an arithmetic number, because the mean of its divisors is an integer number (24628779).

Almost surely, 2^161151005 is an apocalyptic number.

It is an amenable number.

161151005 is a deficient number, since it is larger than the sum of its proper divisors (35879227).

161151005 is an equidigital number, since it uses as much as digits as its factorization.

161151005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608175.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 161151005 is about 12694.5265764423. The cubic root of 161151005 is about 544.1822092290.

The spelling of 161151005 in words is "one hundred sixty-one million, one hundred fifty-one thousand, five".