1001901 has 8 divisors (see below), whose sum is σ = 1341184. Its totient is φ = 665280.

The previous prime is 1001839. The next prime is 1001911. The reversal of 1001901 is 1091001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001901 - 2⁹ = 1001389 is a prime.

It is a super-2 number, since 2×1001901² = 2007611227602, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (167648).

2^1001901 is an apocalyptic number.

It is an amenable number.

1001901 is a deficient number, since it is larger than the sum of its proper divisors (339283).

1001901 is an equidigital number, since it uses as much as digits as its factorization.

1001901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1001901 is about 1000.9500487037. The cubic root of 1001901 is about 100.0633265557.

Adding to 1001901 its reverse (1091001), we get a palindrome (2092902).

The spelling of 1001901 in words is "one million, one thousand, nine hundred one".