5661129 has 8 divisors (see below), whose sum is σ = 7571200. Its totient is φ = 3762576.

The previous prime is 5661121. The next prime is 5661143. The reversal of 5661129 is 9211665.

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

It is not a de Polignac number, because 5661129 - 2³ = 5661121 is a prime.

It is a Duffinian number.

5661129 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5661096 and 5661105.

It is not an unprimeable number, because it can be changed into a prime (5661121) 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 7 ways as a sum of consecutive naturals, for example, 1657 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (946400).

Almost surely, 2^5661129 is an apocalyptic number.

It is an amenable number.

5661129 is a deficient number, since it is larger than the sum of its proper divisors (1910071).

5661129 is a wasteful number, since it uses less digits than its factorization.

5661129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759.

The product of its digits is 3240, while the sum is 30.

The square root of 5661129 is about 2379.3127158909. The cubic root of 5661129 is about 178.2246143953.

The spelling of 5661129 in words is "five million, six hundred sixty-one thousand, one hundred twenty-nine".