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51495052 = 227101131139
BaseRepresentation
bin1100010001110…
…0000010001100
310120220012221011
43010130002030
5101140320202
65035415004
71163462230
oct304340214
9116805834
1051495052
1127081aa4
12152b4464
13a88ca5b
146ba65c0
1547c2bd7
hex311c08c

51495052 has 48 divisors (see below), whose sum is σ = 105557760. Its totient is φ = 21528000.

The previous prime is 51495049. The next prime is 51495053. The reversal of 51495052 is 25059415.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51495053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370399 + ... + 370537.

It is an arithmetic number, because the mean of its divisors is an integer number (2199120).

Almost surely, 251495052 is an apocalyptic number.

It is an amenable number.

51495052 is an abundant number, since it is smaller than the sum of its proper divisors (54062708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51495052 is a wasteful number, since it uses less digits than its factorization.

51495052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 51495052 is about 7176.0052954273. The cubic root of 51495052 is about 372.0390273927.

It can be divided in two parts, 5149 and 5052, that added together give a palindrome (10201).

The spelling of 51495052 in words is "fifty-one million, four hundred ninety-five thousand, fifty-two".

Divisors: 1 2 4 7 14 28 101 131 139 202 262 278 404 524 556 707 917 973 1414 1834 1946 2828 3668 3892 13231 14039 18209 26462 28078 36418 52924 56156 72836 92617 98273 127463 185234 196546 254926 370468 393092 509852 1839109 3678218 7356436 12873763 25747526 51495052