1897201 has 4 divisors (see below), whose sum is σ = 1979712. Its totient is φ = 1814692.

The previous prime is 1897199. The next prime is 1897219. The reversal of 1897201 is 1027981.

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 a cyclic number.

It is not a de Polignac number, because 1897201 - 2¹ = 1897199 is a prime.

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 1897201.

It is not an unprimeable number, because it can be changed into a prime (1897001) 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, 41221 + ... + 41266.

It is an arithmetic number, because the mean of its divisors is an integer number (494928).

2^1897201 is an apocalyptic number.

It is an amenable number.

1897201 is a deficient number, since it is larger than the sum of its proper divisors (82511).

1897201 is an equidigital number, since it uses as much as digits as its factorization.

1897201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82510.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1897201 is about 1377.3891969955. The cubic root of 1897201 is about 123.7953831436.

The spelling of 1897201 in words is "one million, eight hundred ninety-seven thousand, two hundred one".