505516554 has 12 divisors (see below), whose sum is σ = 1095285906. Its totient is φ = 168505512.

The previous prime is 505516549. The next prime is 505516559. The reversal of 505516554 is 455615505.

505516554 is a `hidden beast` number, since 50 + 5 + 51 + 6 + 554 = 666.

It is an interprime number because it is at equal distance from previous prime (505516549) and next prime (505516559).

It can be written as a sum of positive squares in only one way, i.e., 369677529 + 135839025 = 19227^2 + 11655^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505516559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14042109 + ... + 14042144.

Almost surely, 2^505516554 is an apocalyptic number.

505516554 is an abundant number, since it is smaller than the sum of its proper divisors (589769352).

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

505516554 is a wasteful number, since it uses less digits than its factorization.

505516554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28084261 (or 28084258 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 505516554 is about 22483.6952923669. The cubic root of 505516554 is about 796.6088506523.

It can be divided in two parts, 5055 and 16554, that added together give a square (21609 = 147²).

The spelling of 505516554 in words is "five hundred five million, five hundred sixteen thousand, five hundred fifty-four".