505050547 has 4 divisors (see below), whose sum is σ = 505390320. Its totient is φ = 504710776.

The previous prime is 505050529. The next prime is 505050563. The reversal of 505050547 is 745050505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745050505 = 5 ⋅149010101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505050547 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505050517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167647 + ... + 170632.

It is an arithmetic number, because the mean of its divisors is an integer number (126347580).

Almost surely, 2^505050547 is an apocalyptic number.

505050547 is the 12013-rd centered heptagonal number.

505050547 is a deficient number, since it is larger than the sum of its proper divisors (339773).

505050547 is a wasteful number, since it uses less digits than its factorization.

505050547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339772.

The product of its (nonzero) digits is 17500, while the sum is 31.

The square root of 505050547 is about 22473.3296820921. The cubic root of 505050547 is about 796.3639925782.

The spelling of 505050547 in words is "five hundred five million, fifty thousand, five hundred forty-seven".