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51355141 = 103149811
BaseRepresentation
bin1100001111100…
…1111000000101
310120122010000021
43003321320011
5101121331031
65032415141
71162340305
oct303717005
9116563007
1051355141
1126a96972
12152474b1
13a841176
146b6b605
154796511
hex30f9e05

51355141 has 4 divisors (see below), whose sum is σ = 51405984. Its totient is φ = 51304300.

The previous prime is 51355097. The next prime is 51355151. The reversal of 51355141 is 14155315.

It is a happy number.

51355141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51355141 - 219 = 50830853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51355151) 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 3 ways as a sum of consecutive naturals, for example, 23875 + ... + 25936.

It is an arithmetic number, because the mean of its divisors is an integer number (12851496).

Almost surely, 251355141 is an apocalyptic number.

It is an amenable number.

51355141 is a deficient number, since it is larger than the sum of its proper divisors (50843).

51355141 is a wasteful number, since it uses less digits than its factorization.

51355141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50842.

The product of its digits is 1500, while the sum is 25.

The square root of 51355141 is about 7166.2501351823. The cubic root of 51355141 is about 371.7017809755.

The spelling of 51355141 in words is "fifty-one million, three hundred fifty-five thousand, one hundred forty-one".

Divisors: 1 1031 49811 51355141