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52811825 = 5211192043
BaseRepresentation
bin1100100101110…
…1100000110001
310200101010012112
43021131200301
5102004434300
65123535105
71210615223
oct311354061
9120333175
1052811825
11278a1340
121582a495
13ac31201
14702a413
154982e35
hex325d831

52811825 has 12 divisors (see below), whose sum is σ = 71440368. Its totient is φ = 38408400.

The previous prime is 52811791. The next prime is 52811827.

It is a happy number.

52811825 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 52811825 - 26 = 52811761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52811791 and 52811800.

It is not an unprimeable number, because it can be changed into a prime (52811827) 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, 95747 + ... + 96296.

It is an arithmetic number, because the mean of its divisors is an integer number (5953364).

Almost surely, 252811825 is an apocalyptic number.

52811825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52811825 is a deficient number, since it is larger than the sum of its proper divisors (18628543).

52811825 is a wasteful number, since it uses less digits than its factorization.

52811825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192064 (or 192059 counting only the distinct ones).

The product of its digits is 6400, while the sum is 32.

The square root of 52811825 is about 7267.1744853141. The cubic root of 52811825 is about 375.1834953824.

The spelling of 52811825 in words is "fifty-two million, eight hundred eleven thousand, eight hundred twenty-five".

Divisors: 1 5 11 25 55 275 192043 960215 2112473 4801075 10562365 52811825