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53245540 = 22511532309
BaseRepresentation
bin1100101100011…
…1011001100100
310201012011011001
43023013121210
5102112324130
65141123044
71214402545
oct313073144
9121164131
1053245540
1128068187
12159b9484
13b05374a
1471004cc
154a1b6ca
hex32c7664

53245540 has 24 divisors (see below), whose sum is σ = 111961080. Its totient is φ = 21270528.

The previous prime is 53245471. The next prime is 53245559. The reversal of 53245540 is 4554235.

53245540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19998784 + 33246756 = 4472^2 + 5766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53245499 and 53245508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21906 + ... + 24214.

It is an arithmetic number, because the mean of its divisors is an integer number (4665045).

Almost surely, 253245540 is an apocalyptic number.

It is an amenable number.

53245540 is an abundant number, since it is smaller than the sum of its proper divisors (58715540).

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

53245540 is a wasteful number, since it uses less digits than its factorization.

53245540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471 (or 3469 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 53245540 is about 7296.9541590995. The cubic root of 53245540 is about 376.2077563931.

Adding to 53245540 its reverse (4554235), we get a palindrome (57799775).

The spelling of 53245540 in words is "fifty-three million, two hundred forty-five thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 1153 2306 2309 4612 4618 5765 9236 11530 11545 23060 23090 46180 2662277 5324554 10649108 13311385 26622770 53245540