55705847 has 2 divisors, whose sum is σ = 55705848. Its totient is φ = 55705846.

The previous prime is 55705817. The next prime is 55705861. The reversal of 55705847 is 74850755.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55705847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55705807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27852923 + 27852924.

It is an arithmetic number, because the mean of its divisors is an integer number (27852924).

Almost surely, 2^55705847 is an apocalyptic number.

55705847 is a deficient number, since it is larger than the sum of its proper divisors (1).

55705847 is an equidigital number, since it uses as much as digits as its factorization.

55705847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 55705847 is about 7463.6349723174. The cubic root of 55705847 is about 381.9151858889.

The spelling of 55705847 in words is "fifty-five million, seven hundred five thousand, eight hundred forty-seven".