1901201 has 2 divisors, whose sum is σ = 1901202. Its totient is φ = 1901200.

The previous prime is 1901191. The next prime is 1901209. The reversal of 1901201 is 1021091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1752976 + 148225 = 1324^2 + 385^2 .

It is an emirp because it is prime and its reverse (1021091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1901201 - 2¹⁰ = 1900177 is a prime.

It is a super-2 number, since 2×1901201² = 7229130484802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1901209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950600 + 950601.

It is an arithmetic number, because the mean of its divisors is an integer number (950601).

2^1901201 is an apocalyptic number.

It is an amenable number.

1901201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901201 is an equidigital number, since it uses as much as digits as its factorization.

1901201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1901201 is about 1378.8404548750. The cubic root of 1901201 is about 123.8823241919.

Adding to 1901201 its reverse (1021091), we get a palindrome (2922292).

The spelling of 1901201 in words is "one million, nine hundred one thousand, two hundred one".