54515512223540 has 24 divisors (see below), whose sum is σ = 114483423294240. Its totient is φ = 21806043437088.

The previous prime is 54515512223527. The next prime is 54515512223561. The reversal of 54515512223540 is 4532221551545.

It is a junction number, because it is equal to n+sod(n) for n = 54515512223491 and 54515512223500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7303202 + ... + 12742361.

It is an arithmetic number, because the mean of its divisors is an integer number (4770142637260).

Almost surely, 2^{54515512223540} is an apocalyptic number.

It is an amenable number.

54515512223540 is an abundant number, since it is smaller than the sum of its proper divisors (59967911070700).

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

54515512223540 is a wasteful number, since it uses less digits than its factorization.

54515512223540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20181551 (or 20181549 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 54515512223540 in words is "fifty-four trillion, five hundred fifteen billion, five hundred twelve million, two hundred twenty-three thousand, five hundred forty".