56071911 has 16 divisors (see below), whose sum is σ = 85722624. Its totient is φ = 31936224.

The previous prime is 56071903. The next prime is 56071921. The reversal of 56071911 is 11917065.

It is not a de Polignac number, because 56071911 - 2³ = 56071903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56071921) 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 in 15 ways as a sum of consecutive naturals, for example, 2446 + ... + 10868.

It is an arithmetic number, because the mean of its divisors is an integer number (5357664).

Almost surely, 2^56071911 is an apocalyptic number.

56071911 is a deficient number, since it is larger than the sum of its proper divisors (29650713).

56071911 is a wasteful number, since it uses less digits than its factorization.

56071911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 56071911 is about 7488.1179878525. The cubic root of 56071911 is about 382.7499293575.

Adding to 56071911 its reverse (11917065), we get a palindrome (67988976).

The spelling of 56071911 in words is "fifty-six million, seventy-one thousand, nine hundred eleven".