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53912885 = 5132937773
BaseRepresentation
bin1100110110101…
…0010100110101
310202110001120112
43031222110311
5102300203020
65203312405
71223152265
oct315522465
9122401515
1053912885
1128483604
121607b705
13b228420
1472357a5
154aee2c5
hex336a535

53912885 has 32 divisors (see below), whose sum is σ = 74118240. Its totient is φ = 37352448.

The previous prime is 53912869. The next prime is 53912893. The reversal of 53912885 is 58821935.

It can be written as a sum of positive squares in 16 ways, for example, as 21548164 + 32364721 = 4642^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 53912885 - 24 = 53912869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69359 + ... + 70131.

It is an arithmetic number, because the mean of its divisors is an integer number (2316195).

Almost surely, 253912885 is an apocalyptic number.

It is an amenable number.

53912885 is a deficient number, since it is larger than the sum of its proper divisors (20205355).

53912885 is a wasteful number, since it uses less digits than its factorization.

53912885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its digits is 86400, while the sum is 41.

The square root of 53912885 is about 7342.5394108578. The cubic root of 53912885 is about 377.7729499735.

The spelling of 53912885 in words is "fifty-three million, nine hundred twelve thousand, eight hundred eighty-five".

Divisors: 1 5 13 29 37 65 145 185 377 481 773 1073 1885 2405 3865 5365 10049 13949 22417 28601 50245 69745 112085 143005 291421 371813 829429 1457105 1859065 4147145 10782577 53912885