1955259 has 20 divisors (see below), whose sum is σ = 2962080. Its totient is φ = 1285200.

The previous prime is 1955251. The next prime is 1955279. The reversal of 1955259 is 9525591.

It is not a de Polignac number, because 1955259 - 2³ = 1955251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1955251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8062 + ... + 8300.

It is an arithmetic number, because the mean of its divisors is an integer number (148104).

2^1955259 is an apocalyptic number.

1955259 is a deficient number, since it is larger than the sum of its proper divisors (1006821).

1955259 is a wasteful number, since it uses less digits than its factorization.

1955259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 343 counting only the distinct ones).

The product of its digits is 20250, while the sum is 36.

The square root of 1955259 is about 1398.3057605545. The cubic root of 1955259 is about 125.0455087629.

It can be divided in two parts, 19 and 55259, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 1955259 in words is "one million, nine hundred fifty-five thousand, two hundred fifty-nine".