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52069905 = 335616323
BaseRepresentation
bin1100011010100…
…0011000010001
310121222102111000
43012220120101
5101312214110
65100012213
71201405206
oct306503021
9117872430
1052069905
1127434988
1215531069
13aa315c4
146cb5cad
1548881c0
hex31a8611

52069905 has 32 divisors (see below), whose sum is σ = 94101120. Its totient is φ = 27311040.

The previous prime is 52069889. The next prime is 52069931. The reversal of 52069905 is 50996025.

It is not a de Polignac number, because 52069905 - 24 = 52069889 is a prime.

It is a super-2 number, since 2×520699052 = 5422550013418050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52069905.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5074 + ... + 11396.

It is an arithmetic number, because the mean of its divisors is an integer number (2940660).

Almost surely, 252069905 is an apocalyptic number.

It is an amenable number.

52069905 is a deficient number, since it is larger than the sum of its proper divisors (42031215).

52069905 is a wasteful number, since it uses less digits than its factorization.

52069905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398 (or 6392 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 52069905 is about 7215.9479626727. The cubic root of 52069905 is about 373.4182979628.

The spelling of 52069905 in words is "fifty-two million, sixty-nine thousand, nine hundred five".

Divisors: 1 3 5 9 15 27 45 61 135 183 305 549 915 1647 2745 6323 8235 18969 31615 56907 94845 170721 284535 385703 853605 1157109 1928515 3471327 5785545 10413981 17356635 52069905