55782011 has 2 divisors, whose sum is σ = 55782012. Its totient is φ = 55782010.

The previous prime is 55782007. The next prime is 55782029. The reversal of 55782011 is 11028755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55782011 - 2² = 55782007 is a prime.

It is a super-2 number, since 2×55782011² = 6223265502408242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55782071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27891005 + 27891006.

It is an arithmetic number, because the mean of its divisors is an integer number (27891006).

Almost surely, 2^55782011 is an apocalyptic number.

55782011 is a deficient number, since it is larger than the sum of its proper divisors (1).

55782011 is an equidigital number, since it uses as much as digits as its factorization.

55782011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 55782011 is about 7468.7355690237. The cubic root of 55782011 is about 382.0891648807.

The spelling of 55782011 in words is "fifty-five million, seven hundred eighty-two thousand, eleven".