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502711945 = 5731377293
BaseRepresentation
bin11101111101101…
…100011010001001
31022000221102010221
4131331230122021
52012143240240
6121514510041
715312660331
oct3575543211
91260842127
10502711945
11238849a1a
12120435321
13801c45b8
144aaa00c1
152e201a4a
hex1df6c689

502711945 has 8 divisors (see below), whose sum is σ = 611518536. Its totient is φ = 396660096.

The previous prime is 502711939. The next prime is 502711949. The reversal of 502711945 is 549117205.

It can be written as a sum of positive squares in 4 ways, for example, as 36324729 + 466387216 = 6027^2 + 21596^2 .

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 502711945 - 217 = 502580873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 502711945.

It is not an unprimeable number, because it can be changed into a prime (502711949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688282 + ... + 689011.

It is an arithmetic number, because the mean of its divisors is an integer number (76439817).

Almost surely, 2502711945 is an apocalyptic number.

It is an amenable number.

502711945 is a deficient number, since it is larger than the sum of its proper divisors (108806591).

502711945 is a wasteful number, since it uses less digits than its factorization.

502711945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377371.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 502711945 is about 22421.2387035150. The cubic root of 502711945 is about 795.1329208283.

The spelling of 502711945 in words is "five hundred two million, seven hundred eleven thousand, nine hundred forty-five".

Divisors: 1 5 73 365 1377293 6886465 100542389 502711945