505370945 has 8 divisors (see below), whose sum is σ = 606945960. Its totient is φ = 403962880.

The previous prime is 505370933. The next prime is 505370947. The reversal of 505370945 is 549073505.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 167987521 + 337383424 = 12961^2 + 18368^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-505370945 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 505370899 and 505370908.

It is not an unprimeable number, because it can be changed into a prime (505370947) 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, 34976 + ... + 47265.

It is an arithmetic number, because the mean of its divisors is an integer number (75868245).

Almost surely, 2^505370945 is an apocalyptic number.

It is an amenable number.

505370945 is a deficient number, since it is larger than the sum of its proper divisors (101575015).

505370945 is a wasteful number, since it uses less digits than its factorization.

505370945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83475.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 505370945 is about 22480.4569570994. The cubic root of 505370945 is about 796.5323582303.

The spelling of 505370945 in words is "five hundred five million, three hundred seventy thousand, nine hundred forty-five".