505490745 has 8 divisors (see below), whose sum is σ = 808785216. Its totient is φ = 269595056.

The previous prime is 505490737. The next prime is 505490747. The reversal of 505490745 is 547094505.

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 505490745 - 2³ = 505490737 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (505490747) 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, 16849677 + ... + 16849706.

It is an arithmetic number, because the mean of its divisors is an integer number (101098152).

Almost surely, 2^505490745 is an apocalyptic number.

It is an amenable number.

505490745 is a deficient number, since it is larger than the sum of its proper divisors (303294471).

505490745 is a wasteful number, since it uses less digits than its factorization.

505490745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33699391.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 505490745 is about 22483.1213357932. The cubic root of 505490745 is about 796.5952935442.

The spelling of 505490745 in words is "five hundred five million, four hundred ninety thousand, seven hundred forty-five".