1955205 has 32 divisors (see below), whose sum is σ = 3974400. Its totient is φ = 893376.

The previous prime is 1955203. The next prime is 1955237. The reversal of 1955205 is 5025591.

It is not a de Polignac number, because 1955205 - 2¹ = 1955203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (124200).

2^1955205 is an apocalyptic number.

1955205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1955205 is an abundant number, since it is smaller than the sum of its proper divisors (2019195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1955205 is a wasteful number, since it uses less digits than its factorization.

1955205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 1955205 is about 1398.2864513396. The cubic root of 1955205 is about 125.0443575907.

The spelling of 1955205 in words is "one million, nine hundred fifty-five thousand, two hundred five".