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51434311 = 1911092441
BaseRepresentation
bin1100010000110…
…1001101000111
310120210010121111
43010031031013
5101131344221
65034225451
71163120155
oct304151507
9116703544
1051434311
11270403a5
1215285287
13a86b206
146b8c3d5
1547aebe1
hex310d347

51434311 has 8 divisors (see below), whose sum is σ = 54212400. Its totient is φ = 48663360.

The previous prime is 51434303. The next prime is 51434423. The reversal of 51434311 is 11343415.

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 51434311 - 23 = 51434303 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 (51437311) 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, 19851 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (6776550).

Almost surely, 251434311 is an apocalyptic number.

51434311 is a deficient number, since it is larger than the sum of its proper divisors (2778089).

51434311 is a wasteful number, since it uses less digits than its factorization.

51434311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569.

The product of its digits is 720, while the sum is 22.

The square root of 51434311 is about 7171.7718173405. The cubic root of 51434311 is about 371.8926902678.

Adding to 51434311 its reverse (11343415), we get a palindrome (62777726).

The spelling of 51434311 in words is "fifty-one million, four hundred thirty-four thousand, three hundred eleven".

Divisors: 1 19 1109 2441 21071 46379 2707069 51434311