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53907081 = 335950053
BaseRepresentation
bin1100110110100…
…0111010001001
310202102202121120
43031220322021
5102300011311
65203225453
71223126334
oct315507211
9122382546
1053907081
112847a208
1216078289
13b2258a7
14723361b
154aec706
hex3368e89

53907081 has 8 divisors (see below), whose sum is σ = 72077760. Its totient is φ = 35837232.

The previous prime is 53907059. The next prime is 53907097. The reversal of 53907081 is 18070935.

53907081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53907081 - 27 = 53906953 is a prime.

It is a super-2 number, since 2×539070812 = 5811946763881122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53907001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23950 + ... + 26103.

It is an arithmetic number, because the mean of its divisors is an integer number (9009720).

Almost surely, 253907081 is an apocalyptic number.

It is an amenable number.

53907081 is a deficient number, since it is larger than the sum of its proper divisors (18170679).

53907081 is a wasteful number, since it uses less digits than its factorization.

53907081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50415.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 53907081 is about 7342.1441691103. The cubic root of 53907081 is about 377.7593930852.

The spelling of 53907081 in words is "fifty-three million, nine hundred seven thousand, eighty-one".

Divisors: 1 3 359 1077 50053 150159 17969027 53907081