2015801 has 2 divisors, whose sum is σ = 2015802. Its totient is φ = 2015800.

The previous prime is 2015791. The next prime is 2015831. The reversal of 2015801 is 1085102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1836025 + 179776 = 1355^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2015801 is a prime.

It is a Chen prime.

It is a plaindrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 2015801.

It is not a weakly prime, because it can be changed into another prime (2015831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007900 + 1007901.

It is an arithmetic number, because the mean of its divisors is an integer number (1007901).

2^2015801 is an apocalyptic number.

It is an amenable number.

2015801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015801 is an equidigital number, since it uses as much as digits as its factorization.

2015801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2015801 is about 1419.7890688409. The cubic root of 2015801 is about 126.3230352173.

The spelling of 2015801 in words is "two million, fifteen thousand, eight hundred one".