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51288141 = 318319337
BaseRepresentation
bin1100001110100…
…1100001001101
310120111201002210
43003221201031
5101112210031
65031141033
71161641052
oct303514115
9116451083
1051288141
1126a505a3
1215214779
13a819818
146b51029
154781746
hex30e984d

51288141 has 8 divisors (see below), whose sum is σ = 68428864. Its totient is φ = 34169760.

The previous prime is 51288131. The next prime is 51288161. The reversal of 51288141 is 14188215.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51288141 - 26 = 51288077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51288099 and 51288108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51288131) 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, 825 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (8553608).

Almost surely, 251288141 is an apocalyptic number.

It is an amenable number.

51288141 is a deficient number, since it is larger than the sum of its proper divisors (17140723).

51288141 is a wasteful number, since it uses less digits than its factorization.

51288141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11171.

The product of its digits is 2560, while the sum is 30.

The square root of 51288141 is about 7161.5739191884. The cubic root of 51288141 is about 371.5400648878.

The spelling of 51288141 in words is "fifty-one million, two hundred eighty-eight thousand, one hundred forty-one".

Divisors: 1 3 1831 5493 9337 28011 17096047 51288141