505000050551 has 16 divisors (see below), whose sum is σ = 554751763200. Its totient is φ = 457570162368.

The previous prime is 505000050539. The next prime is 505000050557. The reversal of 505000050551 is 155050000505.

It is a cyclic number.

It is not a de Polignac number, because 505000050551 - 2¹⁰ = 505000049527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505000050551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505000050557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4280780 + ... + 4397166.

It is an arithmetic number, because the mean of its divisors is an integer number (34671985200).

Almost surely, 2^505000050551 is an apocalyptic number.

505000050551 is a deficient number, since it is larger than the sum of its proper divisors (49751712649).

505000050551 is a wasteful number, since it uses less digits than its factorization.

505000050551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126358.

The product of its (nonzero) digits is 3125, while the sum is 26.

The spelling of 505000050551 in words is "five hundred five billion, fifty thousand, five hundred fifty-one".