1601801 has 8 divisors (see below), whose sum is σ = 1668864. Its totient is φ = 1535760.

The previous prime is 1601797. The next prime is 1601813. The reversal of 1601801 is 1081061.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1601801 - 2² = 1601797 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 1601801.

It is not an unprimeable number, because it can be changed into a prime (1601861) 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, 4895 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (208608).

2^1601801 is an apocalyptic number.

It is an amenable number.

1601801 is a deficient number, since it is larger than the sum of its proper divisors (67063).

1601801 is a wasteful number, since it uses less digits than its factorization.

1601801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1601801 is about 1265.6227716030. The cubic root of 1601801 is about 117.0045777058.

Adding to 1601801 its reverse (1081061), we get a palindrome (2682862).

It can be divided in two parts, 1601 and 801, that multiplied together give a triangular number (1282401 = T₁₆₀₁).

The spelling of 1601801 in words is "one million, six hundred one thousand, eight hundred one".