13513761 has 6 divisors (see below), whose sum is σ = 19519890. Its totient is φ = 9009168.

The previous prime is 13513751. The next prime is 13513771. The reversal of 13513761 is 16731531.

13513761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13513751) and next prime (13513771).

It can be written as a sum of positive squares in only one way, i.e., 9884736 + 3629025 = 3144^2 + 1905^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13513761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13513751) 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, 750756 + ... + 750773.

It is an arithmetic number, because the mean of its divisors is an integer number (3253315).

Almost surely, 2^13513761 is an apocalyptic number.

It is an amenable number.

13513761 is a deficient number, since it is larger than the sum of its proper divisors (6006129).

13513761 is a wasteful number, since it uses less digits than its factorization.

13513761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501535 (or 1501532 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 13513761 is about 3676.1067721164. The cubic root of 13513761 is about 238.1910348615.

The spelling of 13513761 in words is "thirteen million, five hundred thirteen thousand, seven hundred sixty-one".