1941557 has 2 divisors, whose sum is σ = 1941558. Its totient is φ = 1941556.

The previous prime is 1941547. The next prime is 1941559. The reversal of 1941557 is 7551491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1833316 + 108241 = 1354^2 + 329^2 .

It is an emirp because it is prime and its reverse (7551491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1941557 is a prime.

Together with 1941559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1941559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970778 + 970779.

It is an arithmetic number, because the mean of its divisors is an integer number (970779).

2^1941557 is an apocalyptic number.

It is an amenable number.

1941557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1941557 is an equidigital number, since it uses as much as digits as its factorization.

1941557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 1941557 is about 1393.3976460437. The cubic root of 1941557 is about 124.7527271717.

The spelling of 1941557 in words is "one million, nine hundred forty-one thousand, five hundred fifty-seven".