2087145 has 12 divisors (see below), whose sum is σ = 3617796. Its totient is φ = 1113120.

The previous prime is 2087123. The next prime is 2087147. The reversal of 2087145 is 5417802.

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 1022121 = 1032^2 + 1011^2 .

It is not a de Polignac number, because 2087145 - 2⁶ = 2087081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2087147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23146 + ... + 23235.

It is an arithmetic number, because the mean of its divisors is an integer number (301483).

2^2087145 is an apocalyptic number.

It is an amenable number.

2087145 is a deficient number, since it is larger than the sum of its proper divisors (1530651).

2087145 is a wasteful number, since it uses less digits than its factorization.

2087145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46392 (or 46389 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2087145 is about 1444.6954696406. The cubic root of 2087145 is about 127.7960823738.

The spelling of 2087145 in words is "two million, eighty-seven thousand, one hundred forty-five".