1956217 has 2 divisors, whose sum is σ = 1956218. Its totient is φ = 1956216.

The previous prime is 1956211. The next prime is 1956239. The reversal of 1956217 is 7126591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 26896 = 1389^2 + 164^2 .

It is an emirp because it is prime and its reverse (7126591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1956217 - 2⁷ = 1956089 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1956211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978108 + 978109.

It is an arithmetic number, because the mean of its divisors is an integer number (978109).

2^1956217 is an apocalyptic number.

It is an amenable number.

1956217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956217 is an equidigital number, since it uses as much as digits as its factorization.

1956217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 31.

The square root of 1956217 is about 1398.6482760151. The cubic root of 1956217 is about 125.0659278887.

The spelling of 1956217 in words is "one million, nine hundred fifty-six thousand, two hundred seventeen".