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53013330340 = 2253497595033
BaseRepresentation
bin110001010111110101…
…110011100110100100
312001211120221012202021
4301113311303212210
51332032403032330
640204243352524
73554501605255
oct612765634644
9161746835667
1053013330340
1120534708803
12a336082744
134ccb140929
1427cca06b2c
1515a41bd67a
hexc57d739a4

53013330340 has 24 divisors (see below), whose sum is σ = 111646999800. Its totient is φ = 21144569088.

The previous prime is 53013330323. The next prime is 53013330347. The reversal of 53013330340 is 4303331035.

It can be written as a sum of positive squares in 4 ways, for example, as 10194133156 + 42819197184 = 100966^2 + 206928^2 .

It is not an unprimeable number, because it can be changed into a prime (53013330347) 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, 3790537 + ... + 3804496.

It is an arithmetic number, because the mean of its divisors is an integer number (4651958325).

Almost surely, 253013330340 is an apocalyptic number.

It is an amenable number.

53013330340 is an abundant number, since it is smaller than the sum of its proper divisors (58633669460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53013330340 is a wasteful number, since it uses less digits than its factorization.

53013330340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7595391 (or 7595389 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 25.

Adding to 53013330340 its reverse (4303331035), we get a palindrome (57316661375).

The spelling of 53013330340 in words is "fifty-three billion, thirteen million, three hundred thirty thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 349 698 1396 1745 3490 6980 7595033 15190066 30380132 37975165 75950330 151900660 2650666517 5301333034 10602666068 13253332585 26506665170 53013330340