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52156085 = 5173791619
BaseRepresentation
bin1100011011110…
…1011010110101
310122010210200212
43012331122311
5101322443320
65101515205
71202214362
oct306753265
9118123625
1052156085
1127493703
1215572b05
13aa618b7
146cd9469
1548a39c5
hex31bd6b5

52156085 has 16 divisors (see below), whose sum is σ = 66484800. Its totient is φ = 39142656.

The previous prime is 52156079. The next prime is 52156087. The reversal of 52156085 is 58065125.

It is a cyclic number.

It is not a de Polignac number, because 52156085 - 212 = 52151989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52156087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31406 + ... + 33024.

It is an arithmetic number, because the mean of its divisors is an integer number (4155300).

Almost surely, 252156085 is an apocalyptic number.

It is an amenable number.

52156085 is a deficient number, since it is larger than the sum of its proper divisors (14328715).

52156085 is a wasteful number, since it uses less digits than its factorization.

52156085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 52156085 is about 7221.9169892765. The cubic root of 52156085 is about 373.6241971353.

The spelling of 52156085 in words is "fifty-two million, one hundred fifty-six thousand, eighty-five".

Divisors: 1 5 17 85 379 1619 1895 6443 8095 27523 32215 137615 613601 3068005 10431217 52156085