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55025 = 523171
BaseRepresentation
bin1101011011110001
32210110222
431123301
53230100
61102425
7316265
oct153361
983428
1055025
1138383
1227a15
131c079
14160a5
1511485
hexd6f1

55025 has 12 divisors (see below), whose sum is σ = 71424. Its totient is φ = 42000.

The previous prime is 55021. The next prime is 55049. The reversal of 55025 is 52055.

It can be divided in two parts, 550 and 25, that added together give a palindrome (575).

It is a happy number.

55025 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 55025 - 22 = 55021 is a prime.

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

55025 is an undulating number in base 11.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54994 and 55012.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 55025.

It is not an unprimeable number, because it can be changed into a prime (55021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740 + ... + 810.

It is an arithmetic number, because the mean of its divisors is an integer number (5952).

255025 is an apocalyptic number.

It is an amenable number.

55025 is a deficient number, since it is larger than the sum of its proper divisors (16399).

55025 is a wasteful number, since it uses less digits than its factorization.

55025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 17.

The square root of 55025 is about 234.5740821148. The cubic root of 55025 is about 38.0352857840.

The spelling of 55025 in words is "fifty-five thousand, twenty-five".

Divisors: 1 5 25 31 71 155 355 775 1775 2201 11005 55025