1097505 has 24 divisors (see below), whose sum is σ = 1970280. Its totient is φ = 565152.

The previous prime is 1097501. The next prime is 1097513. The reversal of 1097505 is 5057901.

It can be written as a sum of positive squares in 4 ways, for example, as 1296 + 1096209 = 36^2 + 1047^2 .

It is not a de Polignac number, because 1097505 - 2² = 1097501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37831 + ... + 37859.

It is an arithmetic number, because the mean of its divisors is an integer number (82095).

2^1097505 is an apocalyptic number.

1097505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1097505 is a deficient number, since it is larger than the sum of its proper divisors (872775).

1097505 is an frugal number, since it uses more digits than its factorization.

1097505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 1097505 is about 1047.6187283549. The cubic root of 1097505 is about 103.1499058302.

The spelling of 1097505 in words is "one million, ninety-seven thousand, five hundred five".