2057539 has 4 divisors (see below), whose sum is σ = 2244600. Its totient is φ = 1870480.

The previous prime is 2057537. The next prime is 2057543. The reversal of 2057539 is 9357502.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2057539 - 2¹ = 2057537 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2057539.

It is not an unprimeable number, because it can be changed into a prime (2057537) 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, 93514 + ... + 93535.

It is an arithmetic number, because the mean of its divisors is an integer number (561150).

2^2057539 is an apocalyptic number.

2057539 is a deficient number, since it is larger than the sum of its proper divisors (187061).

2057539 is a wasteful number, since it uses less digits than its factorization.

2057539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187060.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 2057539 is about 1434.4124232591. The cubic root of 2057539 is about 127.1889431405.

It can be divided in two parts, 205 and 7539, that added together give a square (7744 = 88²).

The spelling of 2057539 in words is "two million, fifty-seven thousand, five hundred thirty-nine".