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52120055 = 5136071321
BaseRepresentation
bin1100011011010…
…0100111110111
310122001222021102
43012310213313
5101320320210
65101040315
71202004341
oct306644767
9118058242
1052120055
1127469629
121555609b
13aa4b390
146cca291
154897ea5
hex31b49f7

52120055 has 16 divisors (see below), whose sum is σ = 67517184. Its totient is φ = 38396160.

The previous prime is 52120031. The next prime is 52120067. The reversal of 52120055 is 55002125.

It is not a de Polignac number, because 52120055 - 28 = 52119799 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 38795 + ... + 40115.

It is an arithmetic number, because the mean of its divisors is an integer number (4219824).

Almost surely, 252120055 is an apocalyptic number.

52120055 is a deficient number, since it is larger than the sum of its proper divisors (15397129).

52120055 is a wasteful number, since it uses less digits than its factorization.

52120055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 52120055 is about 7219.4220682822. The cubic root of 52120055 is about 373.5381427415.

The spelling of 52120055 in words is "fifty-two million, one hundred twenty thousand, fifty-five".

Divisors: 1 5 13 65 607 1321 3035 6605 7891 17173 39455 85865 801847 4009235 10424011 52120055