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51314933 = 257199669
BaseRepresentation
bin1100001111000…
…0000011110101
310120120001212002
43003300003311
5101114034213
65031505045
71162112135
oct303600365
9116501762
1051314933
1126a6973a
1215228185
13a828a87
146b5aac5
154789658
hex30f00f5

51314933 has 4 divisors (see below), whose sum is σ = 51514860. Its totient is φ = 51115008.

The previous prime is 51314917. The next prime is 51314941. The reversal of 51314933 is 33941315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44382244 + 6932689 = 6662^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 51314933 - 24 = 51314917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51314896 and 51314905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51314983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99578 + ... + 100091.

It is an arithmetic number, because the mean of its divisors is an integer number (12878715).

Almost surely, 251314933 is an apocalyptic number.

It is an amenable number.

51314933 is a deficient number, since it is larger than the sum of its proper divisors (199927).

51314933 is a wasteful number, since it uses less digits than its factorization.

51314933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199926.

The product of its digits is 4860, while the sum is 29.

The square root of 51314933 is about 7163.4442135051. Note that the first 3 decimals coincide. The cubic root of 51314933 is about 371.6047489026.

The spelling of 51314933 in words is "fifty-one million, three hundred fourteen thousand, nine hundred thirty-three".

Divisors: 1 257 199669 51314933