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51041111 = 1121121991
BaseRepresentation
bin1100001010110…
…1001101010111
310120001011020112
43002231031113
5101031303421
65021553235
71156561622
oct302551527
9116034215
1051041111
11268a1a40
121511581b
13a761254
146ac8db9
15473345b
hex30ad357

51041111 has 8 divisors (see below), whose sum is σ = 55947648. Its totient is φ = 46179000.

The previous prime is 51041063. The next prime is 51041113. The reversal of 51041111 is 11114015.

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 51041111 - 26 = 51041047 is a prime.

It is a super-2 number, since 2×510411112 = 5210390024228642, 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 (51041113) 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, 8675 + ... + 13316.

It is an arithmetic number, because the mean of its divisors is an integer number (6993456).

Almost surely, 251041111 is an apocalyptic number.

51041111 is a deficient number, since it is larger than the sum of its proper divisors (4906537).

51041111 is a wasteful number, since it uses less digits than its factorization.

51041111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22213.

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 51041111 is about 7144.3061944460. The cubic root of 51041111 is about 370.9425954295.

Adding to 51041111 its reverse (11114015), we get a palindrome (62155126).

The spelling of 51041111 in words is "fifty-one million, forty-one thousand, one hundred eleven".

Divisors: 1 11 211 2321 21991 241901 4640101 51041111