1097955 has 20 divisors (see below), whose sum is σ = 1968912. Its totient is φ = 585360.

The previous prime is 1097947. The next prime is 1097983. The reversal of 1097955 is 5597901.

It is a happy number.

It is not a de Polignac number, because 1097955 - 2³ = 1097947 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 951 + ... + 1760.

2^1097955 is an apocalyptic number.

1097955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1097955 is a deficient number, since it is larger than the sum of its proper divisors (870957).

1097955 is an equidigital number, since it uses as much as digits as its factorization.

1097955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 1097955 is about 1047.8334791368. The cubic root of 1097955 is about 103.1640017766.

The spelling of 1097955 in words is "one million, ninety-seven thousand, nine hundred fifty-five".