5661125101 has 2 divisors, whose sum is σ = 5661125102. Its totient is φ = 5661125100.

The previous prime is 5661125089. The next prime is 5661125111. The reversal of 5661125101 is 1015211665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5031064900 + 630060201 = 70930^2 + 25101^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661125101 - 2¹⁷ = 5660994029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5661125101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661125111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830562550 + 2830562551.

It is an arithmetic number, because the mean of its divisors is an integer number (2830562551).

Almost surely, 2^5661125101 is an apocalyptic number.

It is an amenable number.

5661125101 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661125101 is an equidigital number, since it uses as much as digits as its factorization.

5661125101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 5661125101 is about 75240.4485699015. The cubic root of 5661125101 is about 1782.2457347894.

Adding to 5661125101 its reverse (1015211665), we get a palindrome (6676336766).

The spelling of 5661125101 in words is "five billion, six hundred sixty-one million, one hundred twenty-five thousand, one hundred one".