1827201 has 4 divisors (see below), whose sum is σ = 2436272. Its totient is φ = 1218132.

The previous prime is 1827197. The next prime is 1827209. The reversal of 1827201 is 1027281.

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 1827201 - 2² = 1827197 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1827209) 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, 304531 + ... + 304536.

It is an arithmetic number, because the mean of its divisors is an integer number (609068).

2^1827201 is an apocalyptic number.

It is an amenable number.

1827201 is a deficient number, since it is larger than the sum of its proper divisors (609071).

1827201 is an equidigital number, since it uses as much as digits as its factorization.

1827201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609070.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1827201 is about 1351.7399897909. The cubic root of 1827201 is about 122.2537270789.

The spelling of 1827201 in words is "one million, eight hundred twenty-seven thousand, two hundred one".