1955587 has 2 divisors, whose sum is σ = 1955588. Its totient is φ = 1955586.

The previous prime is 1955579. The next prime is 1955593. The reversal of 1955587 is 7855591.

It is a strong prime.

It is an emirp because it is prime and its reverse (7855591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1955587 - 2³ = 1955579 is a prime.

It is a Chen prime.

1955587 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1955507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977793 + 977794.

It is an arithmetic number, because the mean of its divisors is an integer number (977794).

2^1955587 is an apocalyptic number.

1955587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955587 is an equidigital number, since it uses as much as digits as its factorization.

1955587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 40.

The square root of 1955587 is about 1398.4230404280. The cubic root of 1955587 is about 125.0525006131.

The spelling of 1955587 in words is "one million, nine hundred fifty-five thousand, five hundred eighty-seven".