5661577 has 4 divisors (see below), whose sum is σ = 5697796. Its totient is φ = 5625360.

The previous prime is 5661559. The next prime is 5661587. The reversal of 5661577 is 7751665.

5661577 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1565001 + 4096576 = 1251^2 + 2024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5661577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17874 + ... + 18187.

It is an arithmetic number, because the mean of its divisors is an integer number (1424449).

Almost surely, 2^5661577 is an apocalyptic number.

It is an amenable number.

5661577 is a deficient number, since it is larger than the sum of its proper divisors (36219).

5661577 is a wasteful number, since it uses less digits than its factorization.

5661577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36218.

The product of its digits is 44100, while the sum is 37.

The square root of 5661577 is about 2379.4068588621. The cubic root of 5661577 is about 178.2293156084.

The spelling of 5661577 in words is "five million, six hundred sixty-one thousand, five hundred seventy-seven".