5661574 has 4 divisors (see below), whose sum is σ = 8492364. Its totient is φ = 2830786.

The previous prime is 5661559. The next prime is 5661587. The reversal of 5661574 is 4751665.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4751665 = 5 ⋅950333.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1415392 + ... + 1415395.

It is an arithmetic number, because the mean of its divisors is an integer number (2123091).

Almost surely, 2^5661574 is an apocalyptic number.

5661574 is a deficient number, since it is larger than the sum of its proper divisors (2830790).

5661574 is a wasteful number, since it uses less digits than its factorization.

5661574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830789.

The product of its digits is 25200, while the sum is 34.

The square root of 5661574 is about 2379.4062284528. The cubic root of 5661574 is about 178.2292841278.

Subtracting from 5661574 its reverse (4751665), we obtain a palindrome (909909).

The spelling of 5661574 in words is "five million, six hundred sixty-one thousand, five hundred seventy-four".