2051973 has 60 divisors (see below), whose sum is σ = 3972672. Its totient is φ = 1043280.

The previous prime is 2051969. The next prime is 2051999. The reversal of 2051973 is 3791502.

It is not a de Polignac number, because 2051973 - 2² = 2051969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051923) 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 59 ways as a sum of consecutive naturals, for example, 43636 + ... + 43682.

2^2051973 is an apocalyptic number.

It is an amenable number.

2051973 is a deficient number, since it is larger than the sum of its proper divisors (1920699).

2051973 is a wasteful number, since it uses less digits than its factorization.

2051973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 2051973 is about 1432.4709421137. The cubic root of 2051973 is about 127.0741501800.

The spelling of 2051973 in words is "two million, fifty-one thousand, nine hundred seventy-three".