2053945 has 4 divisors (see below), whose sum is σ = 2464740. Its totient is φ = 1643152.

The previous prime is 2053943. The next prime is 2053951. The reversal of 2053945 is 5493502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 826281 = 1108^2 + 909^2 .

It is a cyclic number.

It is not a de Polignac number, because 2053945 - 2¹ = 2053943 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2053943) 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, 205390 + ... + 205399.

It is an arithmetic number, because the mean of its divisors is an integer number (616185).

2^2053945 is an apocalyptic number.

It is an amenable number.

2053945 is a deficient number, since it is larger than the sum of its proper divisors (410795).

2053945 is an equidigital number, since it uses as much as digits as its factorization.

2053945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410794.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2053945 is about 1433.1590979371. The cubic root of 2053945 is about 127.1148443464.

The spelling of 2053945 in words is "two million, fifty-three thousand, nine hundred forty-five".