5661102131 has 4 divisors (see below), whose sum is σ = 5663586264. Its totient is φ = 5658618000.

The previous prime is 5661102113. The next prime is 5661102149. The reversal of 5661102131 is 1312011665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312011665 = 5 ⋅262402333.

It is an interprime number because it is at equal distance from previous prime (5661102113) and next prime (5661102149).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5661102131 is a prime.

It is a super-2 number, since 2×5661102131² = 64096154675225482322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5661102131.

It is not an unprimeable number, because it can be changed into a prime (5661102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1238645 + ... + 1243206.

It is an arithmetic number, because the mean of its divisors is an integer number (1415896566).

Almost surely, 2^5661102131 is an apocalyptic number.

5661102131 is a deficient number, since it is larger than the sum of its proper divisors (2484133).

5661102131 is a wasteful number, since it uses less digits than its factorization.

5661102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484132.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 5661102131 is about 75240.2959257870. The cubic root of 5661102131 is about 1782.2433243003.

Adding to 5661102131 its reverse (1312011665), we get a palindrome (6973113796).

The spelling of 5661102131 in words is "five billion, six hundred sixty-one million, one hundred two thousand, one hundred thirty-one".