56106181 has 2 divisors, whose sum is σ = 56106182. Its totient is φ = 56106180.

The previous prime is 56106157. The next prime is 56106229. The reversal of 56106181 is 18160165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38750625 + 17355556 = 6225^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 56106181 - 2¹¹ = 56104133 is a prime.

It is a super-2 number, since 2×56106181² = 6295807092809522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56106101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28053090 + 28053091.

It is an arithmetic number, because the mean of its divisors is an integer number (28053091).

Almost surely, 2^56106181 is an apocalyptic number.

It is an amenable number.

56106181 is a deficient number, since it is larger than the sum of its proper divisors (1).

56106181 is an equidigital number, since it uses as much as digits as its factorization.

56106181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 56106181 is about 7490.4059302550. The cubic root of 56106181 is about 382.8278897747.

The spelling of 56106181 in words is "fifty-six million, one hundred six thousand, one hundred eighty-one".