54517513715 has 8 divisors (see below), whose sum is σ = 74766876000. Its totient is φ = 37383437952.

The previous prime is 54517513703. The next prime is 54517513717. The reversal of 54517513715 is 51731571545.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-54517513715 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54517513717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778821590 + ... + 778821659.

It is an arithmetic number, because the mean of its divisors is an integer number (9345859500).

Almost surely, 2^54517513715 is an apocalyptic number.

54517513715 is a deficient number, since it is larger than the sum of its proper divisors (20249362285).

54517513715 is a wasteful number, since it uses less digits than its factorization.

54517513715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557643261.

The product of its digits is 367500, while the sum is 44.

The spelling of 54517513715 in words is "fifty-four billion, five hundred seventeen million, five hundred thirteen thousand, seven hundred fifteen".