1955555 has 16 divisors (see below), whose sum is σ = 2730240. Its totient is φ = 1316832.

The previous prime is 1955543. The next prime is 1955579. The reversal of 1955555 is 5555591.

It is a cyclic number.

It is not a de Polignac number, because 1955555 - 2⁴ = 1955539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

1955555 is a modest number, since divided by 5555 gives 195 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1592 + ... + 2538.

It is an arithmetic number, because the mean of its divisors is an integer number (170640).

2^1955555 is an apocalyptic number.

1955555 is a deficient number, since it is larger than the sum of its proper divisors (774685).

1955555 is an equidigital number, since it uses as much as digits as its factorization.

1955555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018.

The product of its digits is 28125, while the sum is 35.

The square root of 1955555 is about 1398.4115989221. The cubic root of 1955555 is about 125.0518185158.

The spelling of 1955555 in words is "one million, nine hundred fifty-five thousand, five hundred fifty-five".