2057631 has 8 divisors (see below), whose sum is σ = 2770560. Its totient is φ = 1358232.

The previous prime is 2057611. The next prime is 2057633. The reversal of 2057631 is 1367502.

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

It is not a de Polignac number, because 2057631 - 2⁵ = 2057599 is a prime.

It is a super-2 number, since 2×2057631² = 8467690664322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057633) 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, 3021 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (346320).

2^2057631 is an apocalyptic number.

2057631 is a deficient number, since it is larger than the sum of its proper divisors (712929).

2057631 is a wasteful number, since it uses less digits than its factorization.

2057631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 2057631 is about 1434.4444917807. Note that the first 4 decimals coincide. The cubic root of 2057631 is about 127.1908388046.

The spelling of 2057631 in words is "two million, fifty-seven thousand, six hundred thirty-one".