56406011 has 2 divisors, whose sum is σ = 56406012. Its totient is φ = 56406010.

The previous prime is 56405977. The next prime is 56406023. The reversal of 56406011 is 11060465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56406011 - 2¹⁰ = 56404987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56406071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28203005 + 28203006.

It is an arithmetic number, because the mean of its divisors is an integer number (28203006).

Almost surely, 2^56406011 is an apocalyptic number.

56406011 is a deficient number, since it is larger than the sum of its proper divisors (1).

56406011 is an equidigital number, since it uses as much as digits as its factorization.

56406011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 56406011 is about 7510.3935316333. The cubic root of 56406011 is about 383.5086194360.

Adding to 56406011 its reverse (11060465), we get a palindrome (67466476).

The spelling of 56406011 in words is "fifty-six million, four hundred six thousand, eleven".