55246783557 has 64 divisors (see below), whose sum is σ = 86146177536. Its totient is φ = 30845337600.

The previous prime is 55246783511. The next prime is 55246783567. The reversal of 55246783557 is 75538764255.

55246783557 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 55246783557 - 2²⁰ = 55245734981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55246783497 and 55246783506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55246783567) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84604243 + ... + 84604895.

It is an arithmetic number, because the mean of its divisors is an integer number (1346034024).

Almost surely, 2^55246783557 is an apocalyptic number.

It is an amenable number.

55246783557 is a deficient number, since it is larger than the sum of its proper divisors (30899393979).

55246783557 is a wasteful number, since it uses less digits than its factorization.

55246783557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its digits is 35280000, while the sum is 57.

The spelling of 55246783557 in words is "fifty-five billion, two hundred forty-six million, seven hundred eighty-three thousand, five hundred fifty-seven".