505245143 has 16 divisors (see below), whose sum is σ = 557172000. Its totient is φ = 455295360.

The previous prime is 505245137. The next prime is 505245157. The reversal of 505245143 is 341542505.

It is not a de Polignac number, because 505245143 - 2¹⁶ = 505179607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505245113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112073 + ... + 116493.

It is an arithmetic number, because the mean of its divisors is an integer number (34823250).

Almost surely, 2^505245143 is an apocalyptic number.

505245143 is a deficient number, since it is larger than the sum of its proper divisors (51926857).

505245143 is a wasteful number, since it uses less digits than its factorization.

505245143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 505245143 is about 22477.6587526370. The cubic root of 505245143 is about 796.4662591397.

Adding to 505245143 its reverse (341542505), we get a palindrome (846787648).

The spelling of 505245143 in words is "five hundred five million, two hundred forty-five thousand, one hundred forty-three".