2051161 has 8 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 1747248.

The previous prime is 2051123. The next prime is 2051167. The reversal of 2051161 is 1611502.

It is a happy number.

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 2051161 - 2¹³ = 2042969 is a prime.

It is a super-2 number, since 2×2051161² = 8414522895842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2051167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2051161 is an apocalyptic number.

It is an amenable number.

2051161 is a deficient number, since it is larger than the sum of its proper divisors (307559).

2051161 is a wasteful number, since it uses less digits than its factorization.

2051161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823.

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

The square root of 2051161 is about 1432.1874877264. The cubic root of 2051161 is about 127.0573861804.

Adding to 2051161 its reverse (1611502), we get a palindrome (3662663).

The spelling of 2051161 in words is "two million, fifty-one thousand, one hundred sixty-one".