2057749 has 8 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 1941600.

The previous prime is 2057747. The next prime is 2057761. The reversal of 2057749 is 9477502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2057749 - 2¹ = 2057747 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 (2057747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

2^2057749 is an apocalyptic number.

It is an amenable number.

2057749 is a deficient number, since it is larger than the sum of its proper divisors (119531).

2057749 is a wasteful number, since it uses less digits than its factorization.

2057749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 2057749 is about 1434.4856220959. The cubic root of 2057749 is about 127.1932701172.

The spelling of 2057749 in words is "two million, fifty-seven thousand, seven hundred forty-nine".