1600261 has 12 divisors (see below), whose sum is σ = 1838052. Its totient is φ = 1387776.

The previous prime is 1600259. The next prime is 1600267. The reversal of 1600261 is 1620061.

1600261 = 894² + 895².

It can be written as a sum of positive squares in 6 ways, for example, as 348100 + 1252161 = 590^2 + 1119^2 .

It is not a de Polignac number, because 1600261 - 2¹ = 1600259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1600267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2595 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (153171).

2^1600261 is an apocalyptic number.

1600261 is the 895-th centered square number.

It is an amenable number.

1600261 is a deficient number, since it is larger than the sum of its proper divisors (237791).

1600261 is a wasteful number, since it uses less digits than its factorization.

1600261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1600261 is about 1265.0142291690. The cubic root of 1600261 is about 116.9670689213.

The spelling of 1600261 in words is "one million, six hundred thousand, two hundred sixty-one".