1955797 has 4 divisors (see below), whose sum is σ = 1985056. Its totient is φ = 1926540.

The previous prime is 1955777. The next prime is 1955801. The reversal of 1955797 is 7975591.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7975591 = 13 ⋅613507.

It is a cyclic number.

It is not a de Polignac number, because 1955797 - 2¹⁵ = 1923029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955747) 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, 14529 + ... + 14662.

It is an arithmetic number, because the mean of its divisors is an integer number (496264).

2^1955797 is an apocalyptic number.

It is an amenable number.

1955797 is a deficient number, since it is larger than the sum of its proper divisors (29259).

1955797 is an equidigital number, since it uses as much as digits as its factorization.

1955797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29258.

The product of its digits is 99225, while the sum is 43.

The square root of 1955797 is about 1398.4981229877. The cubic root of 1955797 is about 125.0569766920.

The spelling of 1955797 in words is "one million, nine hundred fifty-five thousand, seven hundred ninety-seven".