54517399578 has 12 divisors (see below), whose sum is σ = 118121032458. Its totient is φ = 18172466520.

The previous prime is 54517399553. The next prime is 54517399579. The reversal of 54517399578 is 87599371545.

54517399578 is a `hidden beast` number, since 5 + 4 + 51 + 7 + 3 + 9 + 9 + 578 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50815528929 + 3701870649 = 225423^2 + 60843^2 .

It is not an unprimeable number, because it can be changed into a prime (54517399579) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1514372193 + ... + 1514372228.

Almost surely, 2^54517399578 is an apocalyptic number.

54517399578 is an abundant number, since it is smaller than the sum of its proper divisors (63603632880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54517399578 is a wasteful number, since it uses less digits than its factorization.

54517399578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028744429 (or 3028744426 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 63.

The spelling of 54517399578 in words is "fifty-four billion, five hundred seventeen million, three hundred ninety-nine thousand, five hundred seventy-eight".