57561613 has 8 divisors (see below), whose sum is σ = 59058720. Its totient is φ = 56082480.

The previous prime is 57561601. The next prime is 57561629. The reversal of 57561613 is 31616575.

57561613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57561613 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 (57561913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2118 + ... + 10936.

It is an arithmetic number, because the mean of its divisors is an integer number (7382340).

Almost surely, 2^57561613 is an apocalyptic number.

It is an amenable number.

57561613 is a deficient number, since it is larger than the sum of its proper divisors (1497107).

57561613 is a wasteful number, since it uses less digits than its factorization.

57561613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8987.

The product of its digits is 18900, while the sum is 34.

The square root of 57561613 is about 7586.9369972341. The cubic root of 57561613 is about 386.1099425522.

The spelling of 57561613 in words is "fifty-seven million, five hundred sixty-one thousand, six hundred thirteen".