505511000054 has 4 divisors (see below), whose sum is σ = 758266500084. Its totient is φ = 252755500026.

The previous prime is 505511000051. The next prime is 505511000087. The reversal of 505511000054 is 450000115505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450000115505 = 5 ⋅90000023101.

It is a junction number, because it is equal to n+sod(n) for n = 505510999987 and 505511000032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505511000051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126377750012 + ... + 126377750015.

It is an arithmetic number, because the mean of its divisors is an integer number (189566625021).

Almost surely, 2^505511000054 is an apocalyptic number.

505511000054 is a deficient number, since it is larger than the sum of its proper divisors (252755500030).

505511000054 is a wasteful number, since it uses less digits than its factorization.

505511000054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252755500029.

The product of its (nonzero) digits is 2500, while the sum is 26.

Adding to 505511000054 its reverse (450000115505), we get a palindrome (955511115559).

The spelling of 505511000054 in words is "five hundred five billion, five hundred eleven million, fifty-four", and thus it is an aban number.