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52478025 = 3523718911
BaseRepresentation
bin1100100000110…
…0000001001001
310122202011022120
43020030001021
5101413244100
65112441453
71205025105
oct310140111
9118664276
1052478025
1127693576
12156a9289
13ab452b2
146d80905
1549190a0
hex320c049

52478025 has 24 divisors (see below), whose sum is σ = 89113344. Its totient is φ = 27230400.

The previous prime is 52477979. The next prime is 52478047. The reversal of 52478025 is 52087425.

It is not a de Polignac number, because 52478025 - 26 = 52477961 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6681 + ... + 12230.

It is an arithmetic number, because the mean of its divisors is an integer number (3713056).

Almost surely, 252478025 is an apocalyptic number.

It is an amenable number.

52478025 is a deficient number, since it is larger than the sum of its proper divisors (36635319).

52478025 is a wasteful number, since it uses less digits than its factorization.

52478025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18961 (or 18956 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 52478025 is about 7244.1717953124. The cubic root of 52478025 is about 374.3913682698.

The spelling of 52478025 in words is "fifty-two million, four hundred seventy-eight thousand, twenty-five".

Divisors: 1 3 5 15 25 37 75 111 185 555 925 2775 18911 56733 94555 283665 472775 699707 1418325 2099121 3498535 10495605 17492675 52478025