2081157 has 32 divisors (see below), whose sum is σ = 3282048. Its totient is φ = 1161216.

The previous prime is 2081147. The next prime is 2081159. The reversal of 2081157 is 7511802.

It is not a de Polignac number, because 2081157 - 2⁷ = 2081029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081159) 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 31 ways as a sum of consecutive naturals, for example, 28473 + ... + 28545.

It is an arithmetic number, because the mean of its divisors is an integer number (102564).

2^2081157 is an apocalyptic number.

It is an amenable number.

2081157 is a deficient number, since it is larger than the sum of its proper divisors (1200891).

2081157 is a wasteful number, since it uses less digits than its factorization.

2081157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 2081157 is about 1442.6215720001. The cubic root of 2081157 is about 127.6737500435.

Adding to 2081157 its reverse (7511802), we get a palindrome (9592959).

The spelling of 2081157 in words is "two million, eighty-one thousand, one hundred fifty-seven".