55552478247 has 48 divisors (see below), whose sum is σ = 95099031040. Its totient is φ = 30586320576.

The previous prime is 55552478231. The next prime is 55552478249. The reversal of 55552478247 is 74287425555.

It is a happy number.

55552478247 is a `hidden beast` number, since 5 + 5 + 5 + 524 + 78 + 2 + 47 = 666.

It is not a de Polignac number, because 55552478247 - 2⁴ = 55552478231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55552478193 and 55552478202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55552478249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124404 + ... + 355782.

Almost surely, 2^55552478247 is an apocalyptic number.

55552478247 is a deficient number, since it is larger than the sum of its proper divisors (39546552793).

55552478247 is a wasteful number, since it uses less digits than its factorization.

55552478247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231532 (or 231529 counting only the distinct ones).

The product of its digits is 15680000, while the sum is 54.

The spelling of 55552478247 in words is "fifty-five billion, five hundred fifty-two million, four hundred seventy-eight thousand, two hundred forty-seven".