55418767 has 2 divisors, whose sum is σ = 55418768. Its totient is φ = 55418766.

The previous prime is 55418749. The next prime is 55418771. The reversal of 55418767 is 76781455.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55418767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55418717) 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 as a sum of consecutive naturals, namely, 27709383 + 27709384.

It is an arithmetic number, because the mean of its divisors is an integer number (27709384).

Almost surely, 2^55418767 is an apocalyptic number.

55418767 is a deficient number, since it is larger than the sum of its proper divisors (1).

55418767 is an equidigital number, since it uses as much as digits as its factorization.

55418767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 43.

The square root of 55418767 is about 7444.3782144649. The cubic root of 55418767 is about 381.2579891903.

It can be divided in two parts, 554 and 18767, that added together give a square (19321 = 139²).

The spelling of 55418767 in words is "fifty-five million, four hundred eighteen thousand, seven hundred sixty-seven".