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51668156 = 2212917039
BaseRepresentation
bin1100010100011…
…0010010111100
310121020000101102
43011012102330
5101211340111
65043232232
71165113011
oct305062274
9117200342
1051668156
1127190061
1215378678
13a920797
146c0d708
15480913b
hex31464bc

51668156 has 6 divisors (see below), whose sum is σ = 90419280. Its totient is φ = 25834076.

The previous prime is 51668131. The next prime is 51668207. The reversal of 51668156 is 65186615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458516 + ... + 6458523.

It is an arithmetic number, because the mean of its divisors is an integer number (15069880).

Almost surely, 251668156 is an apocalyptic number.

It is an amenable number.

51668156 is a deficient number, since it is larger than the sum of its proper divisors (38751124).

51668156 is a wasteful number, since it uses less digits than its factorization.

51668156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917043 (or 12917041 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 51668156 is about 7188.0564828053. The cubic root of 51668156 is about 372.4554390189.

The spelling of 51668156 in words is "fifty-one million, six hundred sixty-eight thousand, one hundred fifty-six".

Divisors: 1 2 4 12917039 25834078 51668156