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51625 = 53759
BaseRepresentation
bin1100100110101001
32121211001
430212221
53123000
61035001
7303340
oct144651
977731
1051625
1135872
1225a61
131a662
1414b57
151046a
hexc9a9

51625 has 16 divisors (see below), whose sum is σ = 74880. Its totient is φ = 34800.

The previous prime is 51613. The next prime is 51631. The reversal of 51625 is 52615.

It is a happy number.

51625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51625 - 25 = 51593 is a prime.

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (4680).

251625 is an apocalyptic number.

It is an amenable number.

51625 is a deficient number, since it is larger than the sum of its proper divisors (23255).

51625 is an equidigital number, since it uses as much as digits as its factorization.

51625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 71 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 51625 is about 227.2113553500. The cubic root of 51625 is about 37.2351711917.

Subtracting 51625 from its reverse (52615), we obtain a triangular number (990 = T44).

It can be divided in two parts, 51 and 625, that added together give a palindrome (676).

The spelling of 51625 in words is "fifty-one thousand, six hundred twenty-five".

Divisors: 1 5 7 25 35 59 125 175 295 413 875 1475 2065 7375 10325 51625