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557225 = 5231719
BaseRepresentation
bin10001000000010101001
31001022100222
42020002221
5120312400
615535425
74510364
oct2100251
91038328
10557225
11350719
1222a575
13166826
141070db
15b0185
hex880a9

557225 has 12 divisors (see below), whose sum is σ = 714240. Its totient is φ = 430800.

The previous prime is 557201. The next prime is 557261. The reversal of 557225 is 522755.

It is not a de Polignac number, because 557225 - 218 = 295081 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 557194 and 557203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416 + ... + 1134.

It is an arithmetic number, because the mean of its divisors is an integer number (59520).

2557225 is an apocalyptic number.

It is an amenable number.

557225 is a deficient number, since it is larger than the sum of its proper divisors (157015).

557225 is a wasteful number, since it uses less digits than its factorization.

557225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 755 counting only the distinct ones).

The product of its digits is 3500, while the sum is 26.

The square root of 557225 is about 746.4750498175. The cubic root of 557225 is about 82.2893308814.

The spelling of 557225 in words is "five hundred fifty-seven thousand, two hundred twenty-five".

Divisors: 1 5 25 31 155 719 775 3595 17975 22289 111445 557225