56505151 has 2 divisors, whose sum is σ = 56505152. Its totient is φ = 56505150.

The previous prime is 56505131. The next prime is 56505199. The reversal of 56505151 is 15150565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56505151 - 2⁹ = 56504639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56505131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28252575 + 28252576.

It is an arithmetic number, because the mean of its divisors is an integer number (28252576).

Almost surely, 2^56505151 is an apocalyptic number.

56505151 is a deficient number, since it is larger than the sum of its proper divisors (1).

56505151 is an equidigital number, since it uses as much as digits as its factorization.

56505151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 56505151 is about 7516.9908208006. The cubic root of 56505151 is about 383.7331746452.

It can be divided in two parts, 5650 and 5151, that added together give a palindrome (10801).

The spelling of 56505151 in words is "fifty-six million, five hundred five thousand, one hundred fifty-one".