2720201 has 6 divisors (see below), whose sum is σ = 2990106. Its totient is φ = 2472800.

The previous prime is 2720197. The next prime is 2720239. The reversal of 2720201 is 1020272.

It can be written as a sum of positive squares in only one way, i.e., 1628176 + 1092025 = 1276^2 + 1045^2 .

It is not a de Polignac number, because 2720201 - 2² = 2720197 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2720251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11120 + ... + 11361.

It is an arithmetic number, because the mean of its divisors is an integer number (498351).

2^2720201 is an apocalyptic number.

It is an amenable number.

2720201 is a deficient number, since it is larger than the sum of its proper divisors (269905).

2720201 is a wasteful number, since it uses less digits than its factorization.

2720201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22503 (or 22492 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 2720201 is about 1649.3031861971. The cubic root of 2720201 is about 139.5940792994.

Adding to 2720201 its reverse (1020272), we get a palindrome (3740473).

The spelling of 2720201 in words is "two million, seven hundred twenty thousand, two hundred one".