1355917 has 2 divisors, whose sum is σ = 1355918. Its totient is φ = 1355916.

The previous prime is 1355891. The next prime is 1355923. The reversal of 1355917 is 7195531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1240996 + 114921 = 1114^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355917 - 2¹⁵ = 1323149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677958 + 677959.

It is an arithmetic number, because the mean of its divisors is an integer number (677959).

2^1355917 is an apocalyptic number.

It is an amenable number.

1355917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355917 is an equidigital number, since it uses as much as digits as its factorization.

1355917 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1355917 is about 1164.4384912910. The cubic root of 1355917 is about 110.6821793628.

The spelling of 1355917 in words is "one million, three hundred fifty-five thousand, nine hundred seventeen".