2013261 has 4 divisors (see below), whose sum is σ = 2684352. Its totient is φ = 1342172.

The previous prime is 2013251. The next prime is 2013287. The reversal of 2013261 is 1623102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2013261 - 2⁵ = 2013229 is a prime.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2013261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013241) 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, 335541 + ... + 335546.

It is an arithmetic number, because the mean of its divisors is an integer number (671088).

2^2013261 is an apocalyptic number.

It is an amenable number.

2013261 is a deficient number, since it is larger than the sum of its proper divisors (671091).

2013261 is an equidigital number, since it uses as much as digits as its factorization.

2013261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671090.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2013261 is about 1418.8942878171. The cubic root of 2013261 is about 126.2699553464.

Adding to 2013261 its reverse (1623102), we get a palindrome (3636363).

The spelling of 2013261 in words is "two million, thirteen thousand, two hundred sixty-one".