1355197 has 4 divisors (see below), whose sum is σ = 1367740. Its totient is φ = 1342656.

The previous prime is 1355191. The next prime is 1355219. The reversal of 1355197 is 7915531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7915531 = 13 ⋅608887.

It can be written as a sum of positive squares in 2 ways, for example, as 534361 + 820836 = 731^2 + 906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355197 is a prime.

It is a d-powerful number, because it can be written as 1 + 3¹² + 5 + 5³ + 1 + 9² + 7⁷ .

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6108 + ... + 6325.

It is an arithmetic number, because the mean of its divisors is an integer number (341935).

2^1355197 is an apocalyptic number.

It is an amenable number.

1355197 is a deficient number, since it is larger than the sum of its proper divisors (12543).

1355197 is a wasteful number, since it uses less digits than its factorization.

1355197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12542.

The product of its digits is 4725, while the sum is 31.

The square root of 1355197 is about 1164.1292883525. The cubic root of 1355197 is about 110.6625849287.

The spelling of 1355197 in words is "one million, three hundred fifty-five thousand, one hundred ninety-seven".