[go: up one dir, main page]

Search a number
-
+
61225 = 523179
BaseRepresentation
bin1110111100101001
310002222121
432330221
53424400
61151241
7343333
oct167451
9102877
1061225
1141aaa
122b521
1321b38
1418453
151321a
hexef29

61225 has 12 divisors (see below), whose sum is σ = 79360. Its totient is φ = 46800.

The previous prime is 61223. The next prime is 61231. The reversal of 61225 is 52216.

It is a happy number.

It is not a de Polignac number, because 61225 - 21 = 61223 is a prime.

Its product of digits (120) is a multiple of the sum of its prime factors (120).

It is a junction number, because it is equal to n+sod(n) for n = 61199 and 61208.

It is not an unprimeable number, because it can be changed into a prime (61223) 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, 736 + ... + 814.

261225 is an apocalyptic number.

It is an amenable number.

61225 is a deficient number, since it is larger than the sum of its proper divisors (18135).

61225 is a wasteful number, since it uses less digits than its factorization.

61225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 115 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 61225 is about 247.4368606332. The cubic root of 61225 is about 39.4133120005.

Subtracting from 61225 its reverse (52216), we obtain a palindrome (9009).

The spelling of 61225 in words is "sixty-one thousand, two hundred twenty-five".

Divisors: 1 5 25 31 79 155 395 775 1975 2449 12245 61225