54515665250563 has 4 divisors (see below), whose sum is σ = 59471634818808. Its totient is φ = 49559695682320.

The previous prime is 54515665250513. The next prime is 54515665250603. The reversal of 54515665250563 is 36505256651545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54515665250563 - 2⁹ = 54515665250051 is a prime.

It is a super-2 number, since 2×54515665250563² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54515665250498 and 54515665250507.

It is not an unprimeable number, because it can be changed into a prime (54515665250503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2477984784106 + ... + 2477984784127.

It is an arithmetic number, because the mean of its divisors is an integer number (14867908704702).

Almost surely, 2^{54515665250563} is an apocalyptic number.

54515665250563 is a deficient number, since it is larger than the sum of its proper divisors (4955969568245).

54515665250563 is a wasteful number, since it uses less digits than its factorization.

54515665250563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955969568244.

The product of its (nonzero) digits is 81000000, while the sum is 58.

The spelling of 54515665250563 in words is "fifty-four trillion, five hundred fifteen billion, six hundred sixty-five million, two hundred fifty thousand, five hundred sixty-three".