5681513 has 4 divisors (see below), whose sum is σ = 5980560. Its totient is φ = 5382468.

The previous prime is 5681509. The next prime is 5681521. The reversal of 5681513 is 3151865.

5681513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5681513 - 2² = 5681509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5681503) 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, 149495 + ... + 149532.

It is an arithmetic number, because the mean of its divisors is an integer number (1495140).

Almost surely, 2^5681513 is an apocalyptic number.

It is an amenable number.

5681513 is a deficient number, since it is larger than the sum of its proper divisors (299047).

5681513 is a wasteful number, since it uses less digits than its factorization.

5681513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299046.

The product of its digits is 3600, while the sum is 29.

The square root of 5681513 is about 2383.5924567761. The cubic root of 5681513 is about 178.4382690027.

The spelling of 5681513 in words is "five million, six hundred eighty-one thousand, five hundred thirteen".