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51106939 = 1310936067
BaseRepresentation
bin1100001011110…
…1010001111011
310120011111112121
43002331101323
5101040410224
65023222111
71160254552
oct302752173
9116144477
1051106939
1126937444
1215147937
13a7851c0
146b04d99
154747be4
hex30bd47b

51106939 has 8 divisors (see below), whose sum is σ = 55544720. Its totient is φ = 46741536.

The previous prime is 51106933. The next prime is 51106963. The reversal of 51106939 is 93960115.

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 51106939 - 29 = 51106427 is a prime.

It is a super-2 number, since 2×511069392 = 5223838427899442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51106933) 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, 16617 + ... + 19450.

It is an arithmetic number, because the mean of its divisors is an integer number (6943090).

Almost surely, 251106939 is an apocalyptic number.

51106939 is a deficient number, since it is larger than the sum of its proper divisors (4437781).

51106939 is a wasteful number, since it uses less digits than its factorization.

51106939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36189.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 51106939 is about 7148.9117353622. The cubic root of 51106939 is about 371.1019958206.

The spelling of 51106939 in words is "fifty-one million, one hundred six thousand, nine hundred thirty-nine".

Divisors: 1 13 109 1417 36067 468871 3931303 51106939