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52780525 = 5271092767
BaseRepresentation
bin1100100101010…
…1110111101101
310200022112021021
43021111313231
5102002434100
65123134141
71210425040
oct311256755
9120275237
1052780525
112787a876
1215814351
13ac1cba5
14701cc57
154978a1a
hex3255ded

52780525 has 24 divisors (see below), whose sum is σ = 75511040. Its totient is φ = 35847360.

The previous prime is 52780487. The next prime is 52780543. The reversal of 52780525 is 52508725.

It is not a de Polignac number, because 52780525 - 213 = 52772333 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, 17692 + ... + 20458.

Almost surely, 252780525 is an apocalyptic number.

It is an amenable number.

52780525 is a deficient number, since it is larger than the sum of its proper divisors (22730515).

52780525 is a wasteful number, since it uses less digits than its factorization.

52780525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 52780525 is about 7265.0206469080. The cubic root of 52780525 is about 375.1093606968.

The spelling of 52780525 in words is "fifty-two million, seven hundred eighty thousand, five hundred twenty-five".

Divisors: 1 5 7 25 35 109 175 545 763 2725 2767 3815 13835 19075 19369 69175 96845 301603 484225 1508015 2111221 7540075 10556105 52780525