2015541461 has 4 divisors (see below), whose sum is σ = 2043151692. Its totient is φ = 1987931232.

The previous prime is 2015541401. The next prime is 2015541487. The reversal of 2015541461 is 1641455102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1132322500 + 883218961 = 33650^2 + 29719^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015541461 - 2¹⁰ = 2015540437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015541401) 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, 13805006 + ... + 13805151.

It is an arithmetic number, because the mean of its divisors is an integer number (510787923).

Almost surely, 2^2015541461 is an apocalyptic number.

It is an amenable number.

2015541461 is a deficient number, since it is larger than the sum of its proper divisors (27610231).

2015541461 is an equidigital number, since it uses as much as digits as its factorization.

2015541461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27610230.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 2015541461 is about 44894.7821132924. The cubic root of 2015541461 is about 1263.1761352446.

Adding to 2015541461 its reverse (1641455102), we get a palindrome (3656996563).

It can be divided in two parts, 20155 and 41461, that added together give a palindrome (61616).

The spelling of 2015541461 in words is "two billion, fifteen million, five hundred forty-one thousand, four hundred sixty-one".