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52471445 = 5131942487
BaseRepresentation
bin1100100000101…
…0011010010101
310122201211021212
43020022122111
5101413041240
65112351205
71204666655
oct310123225
9118654255
1052471445
1127689634
12156a5505
13ab422c0
146d7c365
154917165
hex320a695

52471445 has 16 divisors (see below), whose sum is σ = 71379840. Its totient is φ = 36707904.

The previous prime is 52471429. The next prime is 52471453. The reversal of 52471445 is 54417425.

It is a cyclic number.

It is not a de Polignac number, because 52471445 - 24 = 52471429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20009 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (4461240).

Almost surely, 252471445 is an apocalyptic number.

It is an amenable number.

52471445 is a deficient number, since it is larger than the sum of its proper divisors (18908395).

52471445 is a wasteful number, since it uses less digits than its factorization.

52471445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42524.

The product of its digits is 22400, while the sum is 32.

The square root of 52471445 is about 7243.7176228785. The cubic root of 52471445 is about 374.3757198266.

The spelling of 52471445 in words is "fifty-two million, four hundred seventy-one thousand, four hundred forty-five".

Divisors: 1 5 13 19 65 95 247 1235 42487 212435 552331 807253 2761655 4036265 10494289 52471445