56105501 has 2 divisors, whose sum is σ = 56105502. Its totient is φ = 56105500.

The previous prime is 56105453. The next prime is 56105521. The reversal of 56105501 is 10550165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55204900 + 900601 = 7430^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 56105501 - 2⁶ = 56105437 is a prime.

It is a super-2 number, since 2×56105501² = 6295654484922002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56105521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28052750 + 28052751.

It is an arithmetic number, because the mean of its divisors is an integer number (28052751).

Almost surely, 2^56105501 is an apocalyptic number.

It is an amenable number.

56105501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56105501 is an equidigital number, since it uses as much as digits as its factorization.

56105501 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.

The square root of 56105501 is about 7490.3605387191. The cubic root of 56105501 is about 382.8263431595.

Adding to 56105501 its reverse (10550165), we get a palindrome (66655666).

It can be divided in two parts, 5610 and 5501, that added together give a palindrome (11111).

The spelling of 56105501 in words is "fifty-six million, one hundred five thousand, five hundred one".