56553287767 has 2 divisors, whose sum is σ = 56553287768. Its totient is φ = 56553287766.

The previous prime is 56553287723. The next prime is 56553287807. The reversal of 56553287767 is 76778235565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56553287767 is a prime.

It is a super-2 number, since 2×56553287767² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56553287717) 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, 28276643883 + 28276643884.

It is an arithmetic number, because the mean of its divisors is an integer number (28276643884).

Almost surely, 2^56553287767 is an apocalyptic number.

56553287767 is a deficient number, since it is larger than the sum of its proper divisors (1).

56553287767 is an equidigital number, since it uses as much as digits as its factorization.

56553287767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088000, while the sum is 61.

The spelling of 56553287767 in words is "fifty-six billion, five hundred fifty-three million, two hundred eighty-seven thousand, seven hundred sixty-seven".