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52130547 = 357191613
BaseRepresentation
bin1100011011011…
…1001011110011
310122002111200000
43012313023303
5101321134142
65101201043
71202050050
oct306671363
9118074600
1052130547
11274764a7
1215560183
13aa530a1
146cd0027
15489b14c
hex31b72f3

52130547 has 48 divisors (see below), whose sum is σ = 93999360. Its totient is φ = 28203552.

The previous prime is 52130527. The next prime is 52130563. The reversal of 52130547 is 74503125.

It is a happy number.

It is not a de Polignac number, because 52130547 - 28 = 52130291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 52130547.

It is not an unprimeable number, because it can be changed into a prime (52130527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31513 + ... + 33125.

It is an arithmetic number, because the mean of its divisors is an integer number (1958320).

Almost surely, 252130547 is an apocalyptic number.

52130547 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

52130547 is a deficient number, since it is larger than the sum of its proper divisors (41868813).

52130547 is a wasteful number, since it uses less digits than its factorization.

52130547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 52130547 is about 7220.1486826796. The cubic root of 52130547 is about 373.5632060256.

The spelling of 52130547 in words is "fifty-two million, one hundred thirty thousand, five hundred forty-seven".

Divisors: 1 3 7 9 19 21 27 57 63 81 133 171 189 243 399 513 567 1197 1539 1613 1701 3591 4617 4839 10773 11291 14517 30647 32319 33873 43551 91941 101619 130653 214529 275823 304857 391959 643587 827469 914571 1930761 2482407 2743713 5792283 7447221 17376849 52130547