56100005501 has 2 divisors, whose sum is σ = 56100005502. Its totient is φ = 56100005500.

The previous prime is 56100005453. The next prime is 56100005531. The reversal of 56100005501 is 10550000165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52750605625 + 3349399876 = 229675^2 + 57874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56100005501 is a prime.

It is a super-2 number, since 2×56100005501² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56100005531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28050002750 + 28050002751.

It is an arithmetic number, because the mean of its divisors is an integer number (28050002751).

Almost surely, 2^56100005501 is an apocalyptic number.

It is an amenable number.

56100005501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56100005501 is an equidigital number, since it uses as much as digits as its factorization.

56100005501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 56100005501 its reverse (10550000165), we get a palindrome (66650005666).

The spelling of 56100005501 in words is "fifty-six billion, one hundred million, five thousand, five hundred one".