55500454487 has 2 divisors, whose sum is σ = 55500454488. Its totient is φ = 55500454486.

The previous prime is 55500454481. The next prime is 55500454561. The reversal of 55500454487 is 78445400555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55500454487 - 2⁸ = 55500454231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55500454481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750227243 + 27750227244.

It is an arithmetic number, because the mean of its divisors is an integer number (27750227244).

Almost surely, 2^55500454487 is an apocalyptic number.

55500454487 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500454487 is an equidigital number, since it uses as much as digits as its factorization.

55500454487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240000, while the sum is 47.

The spelling of 55500454487 in words is "fifty-five billion, five hundred million, four hundred fifty-four thousand, four hundred eighty-seven".