1801061 has 4 divisors (see below), whose sum is σ = 1879392. Its totient is φ = 1722732.

The previous prime is 1801039. The next prime is 1801073. The reversal of 1801061 is 1601081.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1601081 = 853 ⋅1877.

It is a cyclic number.

It is not a de Polignac number, because 1801061 - 2¹⁰ = 1800037 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801021) 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, 39131 + ... + 39176.

It is an arithmetic number, because the mean of its divisors is an integer number (469848).

2^1801061 is an apocalyptic number.

It is an amenable number.

1801061 is a deficient number, since it is larger than the sum of its proper divisors (78331).

1801061 is an equidigital number, since it uses as much as digits as its factorization.

1801061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78330.

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

The square root of 1801061 is about 1342.0361396028. The cubic root of 1801061 is about 121.6679360181.

The spelling of 1801061 in words is "one million, eight hundred one thousand, sixty-one".