2811401 has 4 divisors (see below), whose sum is σ = 2815812. Its totient is φ = 2806992.

The previous prime is 2811397. The next prime is 2811407. The reversal of 2811401 is 1041182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121801 + 2689600 = 349^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2811401 - 2² = 2811397 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 2811401.

It is not an unprimeable number, because it can be changed into a prime (2811407) 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, 1046 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (703953).

2^2811401 is an apocalyptic number.

It is an amenable number.

2811401 is a deficient number, since it is larger than the sum of its proper divisors (4411).

2811401 is an equidigital number, since it uses as much as digits as its factorization.

2811401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 2811401 is about 1676.7232926157. The cubic root of 2811401 is about 141.1370161840.

Adding to 2811401 its reverse (1041182), we get a palindrome (3852583).

It can be divided in two parts, 2811 and 401, that multiplied together give a palindrome (1127211).

The spelling of 2811401 in words is "two million, eight hundred eleven thousand, four hundred one".