505493945 has 8 divisors (see below), whose sum is σ = 661737600. Its totient is φ = 367631920.

The previous prime is 505493941. The next prime is 505493953. The reversal of 505493945 is 549394505.

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

It is not a de Polignac number, because 505493945 - 2² = 505493941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505493896 and 505493905.

It is not an unprimeable number, because it can be changed into a prime (505493941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4595345 + ... + 4595454.

It is an arithmetic number, because the mean of its divisors is an integer number (82717200).

Almost surely, 2^505493945 is an apocalyptic number.

505493945 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505493945 is a deficient number, since it is larger than the sum of its proper divisors (156243655).

505493945 is a wasteful number, since it uses less digits than its factorization.

505493945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9190815.

The product of its (nonzero) digits is 486000, while the sum is 44.

The square root of 505493945 is about 22483.1925001767. The cubic root of 505493945 is about 796.5969744847.

The spelling of 505493945 in words is "five hundred five million, four hundred ninety-three thousand, nine hundred forty-five".