55487078455 has 12 divisors (see below), whose sum is σ = 66641658552. Its totient is φ = 44351583600.

The previous prime is 55487078419. The next prime is 55487078459.

55487078455 is nontrivially palindromic in base 10.

55487078455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55487078455 - 2⁷ = 55487078327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55487078455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55487078459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12463980 + ... + 12468430.

It is an arithmetic number, because the mean of its divisors is an integer number (5553471546).

Almost surely, 2^55487078455 is an apocalyptic number.

55487078455 is a deficient number, since it is larger than the sum of its proper divisors (11154580097).

55487078455 is an frugal number, since it uses more digits than its factorization.

55487078455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 31360000, while the sum is 58.

The spelling of 55487078455 in words is "fifty-five billion, four hundred eighty-seven million, seventy-eight thousand, four hundred fifty-five".