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57725 = 522309
BaseRepresentation
bin1110000101111101
32221011222
432011331
53321400
61123125
7330203
oct160575
987158
1057725
113a408
12294a5
1320375
1417073
1512185
hexe17d

57725 has 6 divisors (see below), whose sum is σ = 71610. Its totient is φ = 46160.

The previous prime is 57719. The next prime is 57727. The reversal of 57725 is 52775.

It can be written as a sum of positive squares in 3 ways, for example, as 10201 + 47524 = 101^2 + 218^2 .

It is not a de Polignac number, because 57725 - 24 = 57709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57694 and 57703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (11935).

257725 is an apocalyptic number.

It is an amenable number.

57725 is a deficient number, since it is larger than the sum of its proper divisors (13885).

57725 is a wasteful number, since it uses less digits than its factorization.

57725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319 (or 2314 counting only the distinct ones).

The product of its digits is 2450, while the sum is 26.

The square root of 57725 is about 240.2602755347. The cubic root of 57725 is about 38.6474918139.

Subtracting from 57725 its reverse (52775), we obtain a triangular number (4950 = T99).

The spelling of 57725 in words is "fifty-seven thousand, seven hundred twenty-five".

Divisors: 1 5 25 2309 11545 57725