55550550555487 has 4 divisors (see below), whose sum is σ = 59823669829000. Its totient is φ = 51277431281976.

The previous prime is 55550550555469. The next prime is 55550550555517. The reversal of 55550550555487 is 78455505505555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55550550555487 - 2¹¹ = 55550550553439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550550555407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136559636737 + ... + 2136559636762.

It is an arithmetic number, because the mean of its divisors is an integer number (14955917457250).

Almost surely, 2^{55550550555487} is an apocalyptic number.

55550550555487 is a deficient number, since it is larger than the sum of its proper divisors (4273119273513).

55550550555487 is a wasteful number, since it uses less digits than its factorization.

55550550555487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273119273512.

The product of its (nonzero) digits is 437500000, while the sum is 64.

The spelling of 55550550555487 in words is "fifty-five trillion, five hundred fifty billion, five hundred fifty million, five hundred fifty-five thousand, four hundred eighty-seven".