2057149 has 4 divisors (see below), whose sum is σ = 2165440. Its totient is φ = 1948860.

The previous prime is 2057147. The next prime is 2057177. The reversal of 2057149 is 9417502.

2057149 = 320² + 321² + ... + 338².

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2057149 - 2¹ = 2057147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54117 + ... + 54154.

It is an arithmetic number, because the mean of its divisors is an integer number (541360).

2^2057149 is an apocalyptic number.

It is an amenable number.

2057149 is a deficient number, since it is larger than the sum of its proper divisors (108291).

2057149 is a wasteful number, since it uses less digits than its factorization.

2057149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108290.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2057149 is about 1434.2764726509. The cubic root of 2057149 is about 127.1809065457.

The spelling of 2057149 in words is "two million, fifty-seven thousand, one hundred forty-nine".