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20000053 = 293122247
BaseRepresentation
bin100110001001…
…0110100110101
31101122002220201
41030102310311
520110000203
61552400501
7331666123
oct114226465
941562821
1020000053
1110320377
126846131
1341b3468
142928913
151b50e1d
hex1312d35

20000053 has 8 divisors (see below), whose sum is σ = 21358080. Its totient is φ = 18686640.

The previous prime is 20000047. The next prime is 20000059. The reversal of 20000053 is 35000002.

It is an interprime number because it is at equal distance from previous prime (20000047) and next prime (20000059).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20000053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19999994 and 20000039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10225 + ... + 12022.

It is an arithmetic number, because the mean of its divisors is an integer number (2669760).

Almost surely, 220000053 is an apocalyptic number.

It is an amenable number.

20000053 is a deficient number, since it is larger than the sum of its proper divisors (1358027).

20000053 is a wasteful number, since it uses less digits than its factorization.

20000053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22307.

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 20000053 is about 4472.1418805758. The cubic root of 20000053 is about 271.4420014328.

Adding to 20000053 its reverse (35000002), we get a palindrome (55000055).

The spelling of 20000053 in words is "twenty million, fifty-three", and thus it is an aban number and an uban number.

Divisors: 1 29 31 899 22247 645163 689657 20000053