1955001 has 4 divisors (see below), whose sum is σ = 2606672. Its totient is φ = 1303332.

The previous prime is 1954991. The next prime is 1955021. The reversal of 1955001 is 1005591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1955001 - 2⁷ = 1954873 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1955021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325831 + ... + 325836.

It is an arithmetic number, because the mean of its divisors is an integer number (651668).

2^1955001 is an apocalyptic number.

It is an amenable number.

1955001 is a deficient number, since it is larger than the sum of its proper divisors (651671).

1955001 is an equidigital number, since it uses as much as digits as its factorization.

1955001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651670.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 1955001 is about 1398.2135030102. The cubic root of 1955001 is about 125.0400085265.

The spelling of 1955001 in words is "one million, nine hundred fifty-five thousand, one".