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52185497 = 7134171197
BaseRepresentation
bin1100011100010…
…0100110011001
310122012022001012
43013010212121
5101324413442
65102303305
71202366210
oct307044631
9118168035
1052185497
1127503811
1215587b35
13aa720c0
146d06077
1548ac582
hex31c4999

52185497 has 32 divisors (see below), whose sum is σ = 67060224. Its totient is φ = 39513600.

The previous prime is 52185487. The next prime is 52185499. The reversal of 52185497 is 79458125.

It is not a de Polignac number, because 52185497 - 28 = 52185241 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (52185499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264803 + ... + 264999.

It is an arithmetic number, because the mean of its divisors is an integer number (2095632).

Almost surely, 252185497 is an apocalyptic number.

It is an amenable number.

52185497 is a deficient number, since it is larger than the sum of its proper divisors (14874727).

52185497 is a wasteful number, since it uses less digits than its factorization.

52185497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329.

The product of its digits is 100800, while the sum is 41.

The square root of 52185497 is about 7223.9530037231. The cubic root of 52185497 is about 373.6944156590.

The spelling of 52185497 in words is "fifty-two million, one hundred eighty-five thousand, four hundred ninety-seven".

Divisors: 1 7 13 41 71 91 197 287 497 533 923 1379 2561 2911 3731 6461 8077 13987 17927 20377 37843 56539 97909 105001 181831 264901 573467 735007 1272817 4014269 7455071 52185497