55518733 has 2 divisors, whose sum is σ = 55518734. Its totient is φ = 55518732.

The previous prime is 55518721. The next prime is 55518761. The reversal of 55518733 is 33781555.

55518733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 209764 = 7437^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 55518733 - 2¹³ = 55510541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55518692 and 55518701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55518433) 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 as a sum of consecutive naturals, namely, 27759366 + 27759367.

It is an arithmetic number, because the mean of its divisors is an integer number (27759367).

Almost surely, 2^55518733 is an apocalyptic number.

It is an amenable number.

55518733 is a deficient number, since it is larger than the sum of its proper divisors (1).

55518733 is an equidigital number, since it uses as much as digits as its factorization.

55518733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 55518733 is about 7451.0893834392. The cubic root of 55518733 is about 381.4870929446.

The spelling of 55518733 in words is "fifty-five million, five hundred eighteen thousand, seven hundred thirty-three".