2053657 has 6 divisors (see below), whose sum is σ = 2123034. Its totient is φ = 1986480.

The previous prime is 2053643. The next prime is 2053661. The reversal of 2053657 is 7563502.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 808201 = 1116^2 + 899^2 .

It is not a de Polignac number, because 2053657 - 2⁷ = 2053529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2053627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108 + ... + 2029.

It is an arithmetic number, because the mean of its divisors is an integer number (353839).

2^2053657 is an apocalyptic number.

It is an amenable number.

2053657 is a deficient number, since it is larger than the sum of its proper divisors (69377).

2053657 is an equidigital number, since it uses as much as digits as its factorization.

2053657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 2053657 is about 1433.0586170845. The cubic root of 2053657 is about 127.1089028069.

The spelling of 2053657 in words is "two million, fifty-three thousand, six hundred fifty-seven".