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518122053 = 3279728723
BaseRepresentation
bin11110111000011…
…110101001000101
31100002221022211200
4132320132221011
52030114401203
6123225053113
715560651631
oct3670365105
91302838750
10518122053
11246514849
12125627199
138345b7c7
144cb51dc1
15307479a3
hex1ee1ea45

518122053 has 12 divisors (see below), whose sum is σ = 757872960. Its totient is φ = 341041896.

The previous prime is 518122051. The next prime is 518122057. The reversal of 518122053 is 350221815.

It is a happy number.

It is not a de Polignac number, because 518122053 - 21 = 518122051 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518122051) 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, 363651 + ... + 365072.

It is an arithmetic number, because the mean of its divisors is an integer number (63156080).

Almost surely, 2518122053 is an apocalyptic number.

It is an amenable number.

518122053 is a deficient number, since it is larger than the sum of its proper divisors (239750907).

518122053 is a wasteful number, since it uses less digits than its factorization.

518122053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728808 (or 728805 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 518122053 is about 22762.2945460250. The cubic root of 518122053 is about 803.1759443084.

Adding to 518122053 its reverse (350221815), we get a palindrome (868343868).

The spelling of 518122053 in words is "five hundred eighteen million, one hundred twenty-two thousand, fifty-three".

Divisors: 1 3 9 79 237 711 728723 2186169 6558507 57569117 172707351 518122053