505456453 has 8 divisors (see below), whose sum is σ = 514596888. Its totient is φ = 496376064.

The previous prime is 505456439. The next prime is 505456459. The reversal of 505456453 is 354654505.

It can be written as a sum of positive squares in 4 ways, for example, as 100360324 + 405096129 = 10018^2 + 20127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505456453 - 2⁵ = 505456421 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 (505456459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151 + ... + 31867.

It is an arithmetic number, because the mean of its divisors is an integer number (64324611).

Almost surely, 2^505456453 is an apocalyptic number.

It is an amenable number.

505456453 is a deficient number, since it is larger than the sum of its proper divisors (9140435).

505456453 is a wasteful number, since it uses less digits than its factorization.

505456453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30023.

The product of its (nonzero) digits is 180000, while the sum is 37.

The square root of 505456453 is about 22482.3587063279. The cubic root of 505456453 is about 796.5772797205.

The spelling of 505456453 in words is "five hundred five million, four hundred fifty-six thousand, four hundred fifty-three".