2053663 has 4 divisors (see below), whose sum is σ = 2063608. Its totient is φ = 2043720.

The previous prime is 2053661. The next prime is 2053673. The reversal of 2053663 is 3663502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3663502 = 2 ⋅1831751.

It is a cyclic number.

It is not a de Polignac number, because 2053663 - 2¹ = 2053661 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 0 + 5⁹ + 3⁶ + 6³ + 6⁵ + 3¹⁰ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2053661) 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, 4656 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (515902).

2^2053663 is an apocalyptic number.

2053663 is a deficient number, since it is larger than the sum of its proper divisors (9945).

2053663 is an equidigital number, since it uses as much as digits as its factorization.

2053663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9944.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 2053663 is about 1433.0607105074. The cubic root of 2053663 is about 127.1090265946.

The spelling of 2053663 in words is "two million, fifty-three thousand, six hundred sixty-three".