2071557 has 12 divisors (see below), whose sum is σ = 3095820. Its totient is φ = 1333248.

The previous prime is 2071543. The next prime is 2071561. The reversal of 2071557 is 7551702.

It can be written as a sum of positive squares in 2 ways, for example, as 1718721 + 352836 = 1311^2 + 594^2 .

It is not a de Polignac number, because 2071557 - 2⁶ = 2071493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2071557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3708 + ... + 4229.

It is an arithmetic number, because the mean of its divisors is an integer number (257985).

2^2071557 is an apocalyptic number.

It is an amenable number.

2071557 is a deficient number, since it is larger than the sum of its proper divisors (1024263).

2071557 is a wasteful number, since it uses less digits than its factorization.

2071557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7972 (or 7969 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 2071557 is about 1439.2904501872. The cubic root of 2071557 is about 127.4771354617.

It can be divided in two parts, 2071 and 557, that added together give a triangular number (2628 = T₇₂).

The spelling of 2071557 in words is "two million, seventy-one thousand, five hundred fifty-seven".