Search a number
-
+
61275 = 3521943
BaseRepresentation
bin1110111101011011
310010001110
432331123
53430100
61151403
7343434
oct167533
9103043
1061275
1142045
122b563
1321b76
141848b
1513250
hexef5b

61275 has 24 divisors (see below), whose sum is σ = 109120. Its totient is φ = 30240.

The previous prime is 61261. The next prime is 61283. The reversal of 61275 is 57216.

61275 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 61275 - 26 = 61211 is a prime.

61275 is an undulating number in base 7.

Its product of digits (420) is a multiple of the sum of its prime divisors (70).

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, 1404 + ... + 1446.

261275 is an apocalyptic number.

61275 is a deficient number, since it is larger than the sum of its proper divisors (47845).

61275 is a wasteful number, since it uses less digits than its factorization.

61275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 70 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 61275 is about 247.5378758897. The cubic root of 61275 is about 39.4240381712.

The spelling of 61275 in words is "sixty-one thousand, two hundred seventy-five".

Divisors: 1 3 5 15 19 25 43 57 75 95 129 215 285 475 645 817 1075 1425 2451 3225 4085 12255 20425 61275