55748639 has 2 divisors, whose sum is σ = 55748640. Its totient is φ = 55748638.

The previous prime is 55748617. The next prime is 55748653. The reversal of 55748639 is 93684755.

55748639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55748639 - 2⁸ = 55748383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55748593 and 55748602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55748699) 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, 27874319 + 27874320.

It is an arithmetic number, because the mean of its divisors is an integer number (27874320).

Almost surely, 2^55748639 is an apocalyptic number.

55748639 is a deficient number, since it is larger than the sum of its proper divisors (1).

55748639 is an equidigital number, since it uses as much as digits as its factorization.

55748639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The square root of 55748639 is about 7466.5011216767. The cubic root of 55748639 is about 382.0129537926.

The spelling of 55748639 in words is "fifty-five million, seven hundred forty-eight thousand, six hundred thirty-nine".