54517528647 has 24 divisors (see below), whose sum is σ = 82930348800. Its totient is φ = 34416255888.

The previous prime is 54517528577. The next prime is 54517528687. The reversal of 54517528647 is 74682571545.

It is a happy number.

54517528647 is a `hidden beast` number, since 5 + 4 + 51 + 7 + 528 + 64 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-54517528647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54517528593 and 54517528602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54517528687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304354 + ... + 449072.

It is an arithmetic number, because the mean of its divisors is an integer number (3455431200).

Almost surely, 2^54517528647 is an apocalyptic number.

54517528647 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

54517528647 is a deficient number, since it is larger than the sum of its proper divisors (28412820153).

54517528647 is a wasteful number, since it uses less digits than its factorization.

54517528647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146947 (or 146944 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 54.

The spelling of 54517528647 in words is "fifty-four billion, five hundred seventeen million, five hundred twenty-eight thousand, six hundred forty-seven".