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52111525 = 5211511811
BaseRepresentation
bin1100011011001…
…0100010100101
310122001112120111
43012302202211
5101320032100
65100533021
71201640434
oct306624245
9118045514
1052111525
1127463184
1215551171
13aa4752b
146cc711b
1548956ba
hex31b28a5

52111525 has 12 divisors (see below), whose sum is σ = 64710144. Its totient is φ = 41630000.

The previous prime is 52111523. The next prime is 52111531. The reversal of 52111525 is 52511125.

It is a happy number.

It is not a de Polignac number, because 52111525 - 21 = 52111523 is a prime.

It is a super-2 number, since 2×521115252 = 5431222075651250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52111496 and 52111505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52111523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27870 + ... + 29680.

It is an arithmetic number, because the mean of its divisors is an integer number (5392512).

Almost surely, 252111525 is an apocalyptic number.

It is an amenable number.

52111525 is a deficient number, since it is larger than the sum of its proper divisors (12598619).

52111525 is a wasteful number, since it uses less digits than its factorization.

52111525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972 (or 2967 counting only the distinct ones).

The product of its digits is 500, while the sum is 22.

The square root of 52111525 is about 7218.8312765987. The cubic root of 52111525 is about 373.5177638029.

The spelling of 52111525 in words is "fifty-two million, one hundred eleven thousand, five hundred twenty-five".

Divisors: 1 5 25 1151 1811 5755 9055 28775 45275 2084461 10422305 52111525