55705213547 has 2 divisors, whose sum is σ = 55705213548. Its totient is φ = 55705213546.

The previous prime is 55705213519. The next prime is 55705213579. The reversal of 55705213547 is 74531250755.

55705213547 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55705213547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55705213498 and 55705213507.

It is not a weakly prime, because it can be changed into another prime (55705216547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27852606773 + 27852606774.

It is an arithmetic number, because the mean of its divisors is an integer number (27852606774).

Almost surely, 2^55705213547 is an apocalyptic number.

55705213547 is a deficient number, since it is larger than the sum of its proper divisors (1).

55705213547 is an equidigital number, since it uses as much as digits as its factorization.

55705213547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 735000, while the sum is 44.

The spelling of 55705213547 in words is "fifty-five billion, seven hundred five million, two hundred thirteen thousand, five hundred forty-seven".