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52138527 = 3719149877
BaseRepresentation
bin1100011011100…
…1001000011111
310122002220121120
43012321020133
5101321413102
65101302023
71202112240
oct306711037
9118086546
1052138527
11274814a1
1215564913
13aa568cc
146cd2cc7
15489d6bc
hex31b921f

52138527 has 32 divisors (see below), whose sum is σ = 84288000. Its totient is φ = 28003968.

The previous prime is 52138517. The next prime is 52138531. The reversal of 52138527 is 72583125.

It is not a de Polignac number, because 52138527 - 28 = 52138271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52138517) 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, 59013 + ... + 59889.

It is an arithmetic number, because the mean of its divisors is an integer number (2634000).

Almost surely, 252138527 is an apocalyptic number.

52138527 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

52138527 is a deficient number, since it is larger than the sum of its proper divisors (32149473).

52138527 is a wasteful number, since it uses less digits than its factorization.

52138527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055.

The product of its digits is 16800, while the sum is 33.

The square root of 52138527 is about 7220.7012817316. The cubic root of 52138527 is about 373.5822663940.

The spelling of 52138527 in words is "fifty-two million, one hundred thirty-eight thousand, five hundred twenty-seven".

Divisors: 1 3 7 19 21 57 133 149 399 447 877 1043 2631 2831 3129 6139 8493 16663 18417 19817 49989 59451 116641 130673 349923 392019 914711 2482787 2744133 7448361 17379509 52138527