1955231 has 4 divisors (see below), whose sum is σ = 1978872. Its totient is φ = 1931592.

The previous prime is 1955203. The next prime is 1955237. The reversal of 1955231 is 1325591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1955231 - 2¹⁴ = 1938847 is a prime.

It is a super-2 number, since 2×1955231² = 7645856526722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1955231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11696 + ... + 11861.

It is an arithmetic number, because the mean of its divisors is an integer number (494718).

2^1955231 is an apocalyptic number.

1955231 is a deficient number, since it is larger than the sum of its proper divisors (23641).

1955231 is an equidigital number, since it uses as much as digits as its factorization.

1955231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23640.

The product of its digits is 1350, while the sum is 26.

The square root of 1955231 is about 1398.2957484023. The cubic root of 1955231 is about 125.0449118615.

The spelling of 1955231 in words is "one million, nine hundred fifty-five thousand, two hundred thirty-one".