2051907 has 16 divisors (see below), whose sum is σ = 3214848. Its totient is φ = 1147680.

The previous prime is 2051893. The next prime is 2051923. The reversal of 2051907 is 7091502.

It is not a de Polignac number, because 2051907 - 2⁴ = 2051891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2051947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963 + ... + 2820.

It is an arithmetic number, because the mean of its divisors is an integer number (200928).

2^2051907 is an apocalyptic number.

2051907 is a deficient number, since it is larger than the sum of its proper divisors (1162941).

2051907 is a wasteful number, since it uses less digits than its factorization.

2051907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 2051907 is about 1432.4479048119. The cubic root of 2051907 is about 127.0727877540.

It can be divided in two parts, 205 and 1907, that added together give a palindrome (2112).

The spelling of 2051907 in words is "two million, fifty-one thousand, nine hundred seven".