55842559 has 2 divisors, whose sum is σ = 55842560. Its totient is φ = 55842558.

The previous prime is 55842547. The next prime is 55842581. The reversal of 55842559 is 95524855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55842559 - 2⁷ = 55842431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55842529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27921279 + 27921280.

It is an arithmetic number, because the mean of its divisors is an integer number (27921280).

Almost surely, 2^55842559 is an apocalyptic number.

55842559 is a deficient number, since it is larger than the sum of its proper divisors (1).

55842559 is an equidigital number, since it uses as much as digits as its factorization.

55842559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360000, while the sum is 43.

The square root of 55842559 is about 7472.7879001080. The cubic root of 55842559 is about 382.2273597870.

The spelling of 55842559 in words is "fifty-five million, eight hundred forty-two thousand, five hundred fifty-nine".