1955117 has 8 divisors (see below), whose sum is σ = 2047896. Its totient is φ = 1864512.

The previous prime is 1955113. The next prime is 1955123. The reversal of 1955117 is 7115591.

It can be written as a sum of positive squares in 4 ways, for example, as 1267876 + 687241 = 1126^2 + 829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1955117 - 2² = 1955113 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1955117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955113) 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 7 ways as a sum of consecutive naturals, for example, 1463 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (255987).

2^1955117 is an apocalyptic number.

It is an amenable number.

1955117 is a deficient number, since it is larger than the sum of its proper divisors (92779).

1955117 is an equidigital number, since it uses as much as digits as its factorization.

1955117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087.

The product of its digits is 1575, while the sum is 29.

The square root of 1955117 is about 1398.2549838996. The cubic root of 1955117 is about 125.0424815609.

The spelling of 1955117 in words is "one million, nine hundred fifty-five thousand, one hundred seventeen".