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51143053 = 1323171047
BaseRepresentation
bin1100001100011…
…0000110001101
310120020100002011
43003012012031
5101043034203
65024101221
71160465053
oct303060615
9116210064
1051143053
1126961595
1215164811
13a798780
146b141d3
15475376d
hex30c618d

51143053 has 8 divisors (see below), whose sum is σ = 57472128. Its totient is φ = 45156144.

The previous prime is 51143047. The next prime is 51143063. The reversal of 51143053 is 35034115.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51143053 - 217 = 51011981 is a prime.

It is a super-2 number, since 2×511430532 = 5231223740321618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51143033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85225 + ... + 85822.

It is an arithmetic number, because the mean of its divisors is an integer number (7184016).

Almost surely, 251143053 is an apocalyptic number.

It is an amenable number.

51143053 is a deficient number, since it is larger than the sum of its proper divisors (6329075).

51143053 is a wasteful number, since it uses less digits than its factorization.

51143053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171083.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51143053 is about 7151.4371282981. The cubic root of 51143053 is about 371.1893865755.

Adding to 51143053 its reverse (35034115), we get a palindrome (86177168).

The spelling of 51143053 in words is "fifty-one million, one hundred forty-three thousand, fifty-three".

Divisors: 1 13 23 299 171047 2223611 3934081 51143053