55865773 has 2 divisors, whose sum is σ = 55865774. Its totient is φ = 55865772.

The previous prime is 55865767. The next prime is 55865779. The reversal of 55865773 is 37756855.

It is a balanced prime because it is at equal distance from previous prime (55865767) and next prime (55865779).

It can be written as a sum of positive squares in only one way, i.e., 55086084 + 779689 = 7422^2 + 883^2 .

It is a cyclic number.

It is not a de Polignac number, because 55865773 - 2⁵ = 55865741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55865779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27932886 + 27932887.

It is an arithmetic number, because the mean of its divisors is an integer number (27932887).

Almost surely, 2^55865773 is an apocalyptic number.

It is an amenable number.

55865773 is a deficient number, since it is larger than the sum of its proper divisors (1).

55865773 is an equidigital number, since it uses as much as digits as its factorization.

55865773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 46.

The square root of 55865773 is about 7474.3409742933. The cubic root of 55865773 is about 382.2803169870.

The spelling of 55865773 in words is "fifty-five million, eight hundred sixty-five thousand, seven hundred seventy-three".