505416253 has 4 divisors (see below), whose sum is σ = 505489600. Its totient is φ = 505342908.

The previous prime is 505416229. The next prime is 505416259. The reversal of 505416253 is 352614505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505416253 - 2²⁵ = 471861821 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 (505416259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25125 + ... + 40522.

It is an arithmetic number, because the mean of its divisors is an integer number (126372400).

Almost surely, 2^505416253 is an apocalyptic number.

It is an amenable number.

505416253 is a deficient number, since it is larger than the sum of its proper divisors (73347).

505416253 is an equidigital number, since it uses as much as digits as its factorization.

505416253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73346.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 505416253 is about 22481.4646542435. The cubic root of 505416253 is about 796.5561613462.

The spelling of 505416253 in words is "five hundred five million, four hundred sixteen thousand, two hundred fifty-three".