55554887 has 2 divisors, whose sum is σ = 55554888. Its totient is φ = 55554886.

The previous prime is 55554847. The next prime is 55554911. The reversal of 55554887 is 78845555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55554887 - 2¹⁰ = 55553863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55554817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777443 + 27777444.

It is an arithmetic number, because the mean of its divisors is an integer number (27777444).

Almost surely, 2^55554887 is an apocalyptic number.

55554887 is a deficient number, since it is larger than the sum of its proper divisors (1).

55554887 is an equidigital number, since it uses as much as digits as its factorization.

55554887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120000, while the sum is 47.

The square root of 55554887 is about 7453.5150767943. The cubic root of 55554887 is about 381.5698835682.

The spelling of 55554887 in words is "fifty-five million, five hundred fifty-four thousand, eight hundred eighty-seven".