1975117 has 2 divisors, whose sum is σ = 1975118. Its totient is φ = 1975116.

The previous prime is 1975091. The next prime is 1975121. The reversal of 1975117 is 7115791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 45796 = 1389^2 + 214^2 .

It is an emirp because it is prime and its reverse (7115791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1975117 - 2⁷ = 1974989 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1975147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987558 + 987559.

It is an arithmetic number, because the mean of its divisors is an integer number (987559).

2^1975117 is an apocalyptic number.

It is an amenable number.

1975117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1975117 is an equidigital number, since it uses as much as digits as its factorization.

1975117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2205, while the sum is 31.

The square root of 1975117 is about 1405.3885583710. The cubic root of 1975117 is about 125.4674126912.

The spelling of 1975117 in words is "one million, nine hundred seventy-five thousand, one hundred seventeen".