151205161 has 4 divisors (see below), whose sum is σ = 151807824. Its totient is φ = 150602500.

The previous prime is 151205147. The next prime is 151205177. The reversal of 151205161 is 161502151.

It is a happy number.

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 not a de Polignac number, because 151205161 - 2¹¹ = 151203113 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151205261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300955 + ... + 301456.

It is an arithmetic number, because the mean of its divisors is an integer number (37951956).

Almost surely, 2^151205161 is an apocalyptic number.

It is an amenable number.

151205161 is a deficient number, since it is larger than the sum of its proper divisors (602663).

151205161 is an equidigital number, since it uses as much as digits as its factorization.

151205161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602662.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 151205161 is about 12296.5507765389. The cubic root of 151205161 is about 532.7484624482.

The spelling of 151205161 in words is "one hundred fifty-one million, two hundred five thousand, one hundred sixty-one".