2781201 has 16 divisors (see below), whose sum is σ = 3974400. Its totient is φ = 1724688.

The previous prime is 2781199. The next prime is 2781203. The reversal of 2781201 is 1021872.

It is an interprime number because it is at equal distance from previous prime (2781199) and next prime (2781203).

It is not a de Polignac number, because 2781201 - 2¹ = 2781199 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2781203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950 + ... + 3776.

It is an arithmetic number, because the mean of its divisors is an integer number (248400).

2^2781201 is an apocalyptic number.

It is an amenable number.

2781201 is a deficient number, since it is larger than the sum of its proper divisors (1193199).

2781201 is a wasteful number, since it uses less digits than its factorization.

2781201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2781201 is about 1667.6933171300. The cubic root of 2781201 is about 140.6298323278.

The spelling of 2781201 in words is "two million, seven hundred eighty-one thousand, two hundred one".