55517767 has 6 divisors (see below), whose sum is σ = 58975928. Its totient is φ = 52251744.

The previous prime is 55517729. The next prime is 55517771. The reversal of 55517767 is 76771555.

55517767 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-55517767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55511767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95763 + ... + 96340.

Almost surely, 2^55517767 is an apocalyptic number.

55517767 is a deficient number, since it is larger than the sum of its proper divisors (3458161).

55517767 is a wasteful number, since it uses less digits than its factorization.

55517767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192137 (or 192120 counting only the distinct ones).

The product of its digits is 257250, while the sum is 43.

The square root of 55517767 is about 7451.0245604212. The cubic root of 55517767 is about 381.4848803660.

The spelling of 55517767 in words is "fifty-five million, five hundred seventeen thousand, seven hundred sixty-seven".