505513454 has 4 divisors (see below), whose sum is σ = 758270184. Its totient is φ = 252756726.

The previous prime is 505513453. The next prime is 505513457. The reversal of 505513454 is 454315505.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 505513454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505513451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126378362 + ... + 126378365.

It is an arithmetic number, because the mean of its divisors is an integer number (189567546).

Almost surely, 2^505513454 is an apocalyptic number.

505513454 is a deficient number, since it is larger than the sum of its proper divisors (252756730).

505513454 is a wasteful number, since it uses less digits than its factorization.

505513454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252756729.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 505513454 is about 22483.6263534155. The cubic root of 505513454 is about 796.6072222899.

Adding to 505513454 its reverse (454315505), we get a palindrome (959828959).

The spelling of 505513454 in words is "five hundred five million, five hundred thirteen thousand, four hundred fifty-four".