1165537 has 12 divisors (see below), whose sum is σ = 1283260. Its totient is φ = 1057536.

The previous prime is 1165531. The next prime is 1165579. The reversal of 1165537 is 7355611.

It can be written as a sum of positive squares in 6 ways, for example, as 398161 + 767376 = 631^2 + 876^2 .

It is not a de Polignac number, because 1165537 - 2³ = 1165529 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165531) 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, 10639 + ... + 10747.

2^1165537 is an apocalyptic number.

1165537 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1165537 is a deficient number, since it is larger than the sum of its proper divisors (117723).

1165537 is a wasteful number, since it uses less digits than its factorization.

1165537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 163 counting only the distinct ones).

The product of its digits is 3150, while the sum is 28.

The square root of 1165537 is about 1079.6003890329. The cubic root of 1165537 is about 105.2386709840.

The spelling of 1165537 in words is "one million, one hundred sixty-five thousand, five hundred thirty-seven".