2000161501 has 4 divisors (see below), whose sum is σ = 2154020092. Its totient is φ = 1846302912.

The previous prime is 2000161487. The next prime is 2000161517. The reversal of 2000161501 is 1051610002.

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 250747225 + 1749414276 = 15835^2 + 41826^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000161501 - 2¹⁷ = 2000030429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000161531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76929276 + ... + 76929301.

It is an arithmetic number, because the mean of its divisors is an integer number (538505023).

Almost surely, 2^2000161501 is an apocalyptic number.

It is an amenable number.

2000161501 is a deficient number, since it is larger than the sum of its proper divisors (153858591).

2000161501 is a wasteful number, since it uses less digits than its factorization.

2000161501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153858590.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2000161501 is about 44723.1651496179. The cubic root of 2000161501 is about 1259.9549620670.

Adding to 2000161501 its reverse (1051610002), we get a palindrome (3051771503).

The spelling of 2000161501 in words is "two billion, one hundred sixty-one thousand, five hundred one".