55554773 has 2 divisors, whose sum is σ = 55554774. Its totient is φ = 55554772.

The previous prime is 55554769. The next prime is 55554817. The reversal of 55554773 is 37745555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34550884 + 21003889 = 5878^2 + 4583^2 .

It is a cyclic number.

It is not a de Polignac number, because 55554773 - 2² = 55554769 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55554773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55554743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777386 + 27777387.

It is an arithmetic number, because the mean of its divisors is an integer number (27777387).

Almost surely, 2^55554773 is an apocalyptic number.

It is an amenable number.

55554773 is a deficient number, since it is larger than the sum of its proper divisors (1).

55554773 is an equidigital number, since it uses as much as digits as its factorization.

55554773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367500, while the sum is 41.

The square root of 55554773 is about 7453.5074293919. The cubic root of 55554773 is about 381.5696225711.

The spelling of 55554773 in words is "fifty-five million, five hundred fifty-four thousand, seven hundred seventy-three".