1955641 has 2 divisors, whose sum is σ = 1955642. Its totient is φ = 1955640.

The previous prime is 1955633. The next prime is 1955671. The reversal of 1955641 is 1465591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 92416 = 1365^2 + 304^2 .

It is an emirp because it is prime and its reverse (1465591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1955641 - 2³ = 1955633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1955671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977820 + 977821.

It is an arithmetic number, because the mean of its divisors is an integer number (977821).

2^1955641 is an apocalyptic number.

It is an amenable number.

1955641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955641 is an equidigital number, since it uses as much as digits as its factorization.

1955641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 1955641 is about 1398.4423477570. The cubic root of 1955641 is about 125.0536516354.

The spelling of 1955641 in words is "one million, nine hundred fifty-five thousand, six hundred forty-one".