5661371 has 4 divisors (see below), whose sum is σ = 5671512. Its totient is φ = 5651232.

The previous prime is 5661367. The next prime is 5661389. The reversal of 5661371 is 1731665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5661371 - 2² = 5661367 is a prime.

It is a super-2 number, since 2×5661371² = 64102243199282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661311) 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 3 ways as a sum of consecutive naturals, for example, 4181 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (1417878).

Almost surely, 2^5661371 is an apocalyptic number.

5661371 is a deficient number, since it is larger than the sum of its proper divisors (10141).

5661371 is an equidigital number, since it uses as much as digits as its factorization.

5661371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140.

The product of its digits is 3780, while the sum is 29.

The square root of 5661371 is about 2379.3635703692. The cubic root of 5661371 is about 178.2271539206.

The spelling of 5661371 in words is "five million, six hundred sixty-one thousand, three hundred seventy-one".