2141801 has 2 divisors, whose sum is σ = 2141802. Its totient is φ = 2141800.

The previous prime is 2141791. The next prime is 2141803. The reversal of 2141801 is 1081412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 10201 = 1460^2 + 101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2141801 is a prime.

Together with 2141803, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2141801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070900 + 1070901.

It is an arithmetic number, because the mean of its divisors is an integer number (1070901).

2^2141801 is an apocalyptic number.

It is an amenable number.

2141801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141801 is an equidigital number, since it uses as much as digits as its factorization.

2141801 is an evil number, because the sum of its binary digits is even.

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

The square root of 2141801 is about 1463.4893235005. The cubic root of 2141801 is about 128.9020148091.

The spelling of 2141801 in words is "two million, one hundred forty-one thousand, eight hundred one".